[Pw_forum] Finite Temperature Schrödinger Equation.

2012-06-02 Thread Hongsheng Zhao
thods for taking the temperature into effect within Schr?dinger Equation? Which is the most feasible schedule till now? Regards -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] qdel cann't kill the job.

2011-10-18 Thread Hongsheng Zhao
On 10/18/2011 02:26 AM, Arles V. Gil Rebaza wrote: > Hi Hongsheng Zhao, you must be like root and try. > > >> qdel -p > > where XXX is the process number.!! Thanks a lot, the following command do the trick: node32:~ # qdel -p 283 Another issue, why I must run

[Pw_forum] qdel cann't kill the job.

2011-10-18 Thread Hongsheng Zhao
On 10/17/2011 11:56 AM, Axel Kohlmeyer wrote: > On Sun, Oct 16, 2011 at 11:41 PM, Hongsheng Zhao > wrote: >> Hi all, >> >> I use pbs as the queuing management system. Currently, I meet the >> following strange issue, i.e., the qdel cann't kill the jo

[Pw_forum] qdel cann't kill the job.

2011-10-17 Thread Hongsheng Zhao
t node32:~> Could you please give me some hints, many thanks in advance. Regards -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Using a big box model to calculating the energy of isolated atom

2011-07-30 Thread Hongsheng Zhao
sharif.edu/%7Em_nahali>lum.sharif.edu/~m_nahali > <http://lum.sharif.edu/~m_nahali> > > PSave a Tree . . . Please don't print this e-mail unless you really need to. > > > > Hongsheng Zhao Wrote : > > Thanks a lot for all of the helps on this topic. I&#

[Pw_forum] Using a big box model to calculating the energy of isolated atom.

2011-07-29 Thread Hongsheng Zhao
l 28, 2011 at 10:12 AM, Gabriele Sclauzero > mailto:gabriele.sclauzero at epfl.ch>> wrote: > > > Il giorno 28/lug/2011, alle ore 01.55, Hongsheng Zhao ha scritto: > >> Hi all, >> >> I've learned that when using the a large-cell ( i.e., a big box ) to &

[Pw_forum] Using a big box model to calculating the energy of isolated atom.

2011-07-27 Thread Hongsheng Zhao
a big box model for this purpose. Any hints on this issue? Regards -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Can pwscf do the Superconductivity study?

2011-07-24 Thread Hongsheng Zhao
Hi all, I want to know can pwscf be used to study Superconductivity, say, based on bcs theory? Regards -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] My vague understanding of internal degrees of freedom

2011-07-22 Thread Hongsheng Zhao
On 07/22/2011 07:46 PM, RCP wrote: > > Hello, > > > Hongsheng Zhao wrote: >> On 07/22/2011 03:49 PM, xiaochuan Ge wrote: >> > ... >> Based on the above description, let we back to my question again: I >> want know for a specific system, how we know

[Pw_forum] My vague understanding of internal degrees of freedom

2011-07-22 Thread Hongsheng Zhao
On 07/22/2011 03:49 PM, xiaochuan Ge wrote: > Dear Hongsheng Zhao, > I am not sure about what you want to ask. But I guess if what you mean > by "internal degrees" is what you have specified, a system having or > not having the internal degrees does not depend on the shape

[Pw_forum] My vague understanding of internal degrees of freedom.

2011-07-22 Thread Hongsheng Zhao
em has the internal degrees of freedom or not? ps. According to the paper J. Phys.: Condens. Matter 21 395502, the internal degrees of freedom, also can be called the microscopic degrees of freedom, is the atomic coordinates; and the macroscopic degrees of freedom are the shape and size of the unit

[Pw_forum] problem in calculating the binding energies with pwscf

2011-07-22 Thread Hongsheng Zhao
80.0,occupations='fixed',starting_magnetization(1)=10, > / > &electrons > / > ATOMIC_SPECIES > Si 28.086 Si.pbe-n-van.UPF > ATOMIC_POSITIONS > Si 0.50 0.50 0.50 > K_POINTS gamma > > CELL_PARAMETERS {cubic} > 1.00 0.00 0.00 >

[Pw_forum] Pressure-induced phase transition

2011-07-20 Thread Hongsheng Zhao
n? I've heard about some "mode softening", but I am not sure >> how it can be used in this context? Could you refer me to some article >> explaining the theory behind this >> >> Thanks again >> Amin >> >> >> >> >> >> On Mo

[Pw_forum] The issue confused me when calculating the elastic constants.

2011-07-19 Thread Hongsheng Zhao
highly appreciated. Thanks in advance. Best -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Pressure-induced phase transition

2011-07-19 Thread Hongsheng Zhao
On 07/19/2011 08:27 PM, Eric Germaneau wrote: [snipped] > The guy wanted our opening, I got it. What's the meaning of this sentence? It's so incomprehensible to me. Regards -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Pressure-induced phase transition

2011-07-19 Thread Hongsheng Zhao
I don't have experience on such thing. Perhaps others can help. Regards > > Thanks again > Amin > > > > > > On Mon, Jul 18, 2011 at 9:28 PM, Hongsheng Zhao <mailto:zhaohscas at yahoo.com.cn>> wrote: > > On 07/19/2011 06:49 PM, Eric Germaneau wrot

[Pw_forum] Pressure-induced phase transition

2011-07-19 Thread Hongsheng Zhao
On 07/19/2011 06:49 PM, Eric Germaneau wrote: > > > On 07/18/2011 10:45 AM, Hongsheng Zhao wrote: >> On 07/19/2011 09:23 AM, Eric Germaneau wrote: >>> Hey Amin, >>> >>> The approach you proposed is ok but you should relax the cell as well. >>> B

[Pw_forum] Pressure-induced phase transition

2011-07-19 Thread Hongsheng Zhao
On 07/19/2011 08:15 AM, Hongsheng Zhao wrote: > 2- If you have two or more initial phases and want to find the phase > transition pressure among them. In this case, you can do the relax > calculation for each phase by impose external pressure in certain > range. And then you can

[Pw_forum] Pressure-induced phase transition

2011-07-19 Thread Hongsheng Zhao
On 07/19/2011 08:15 AM, Hongsheng Zhao wrote: > 2- If you have two or more initial phases and want to find the phase > transition pressure among them. In this case, you can do the relax > calculation for each phase by impose external pressure in certain > range. And then you can

[Pw_forum] Pressure-induced phase transition

2011-07-19 Thread Hongsheng Zhao
On 07/19/2011 08:15 AM, Hongsheng Zhao wrote: > > 1- If you only use one type of initial phase to do this type of study. > Then you should use the vc-relax when changing the external pressure. > And then see what's the ultimate unit cell looks like for each > pressure st

[Pw_forum] Pressure-induced phase transition

2011-07-19 Thread Hongsheng Zhao
on just as the uspex or similar codes done for you. Regards > > Thanks -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Pressure-induced phase transition

2011-07-18 Thread Hongsheng Zhao
experiences > doing this by mean of first principal calculations. > > I hope that helps, > Good luck, -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Pressure-induced phase transition

2011-07-18 Thread Hongsheng Zhao
y /of/ Western Ontario > London, On Canada, N6A 5B7 > Phone: 519-661-2111 Ext: 87871 > > > > > ___ > Pw_forum mailing list > Pw_forum at pwscf.org > http://www.democritos.it/mailman/listinfo/pw_forum -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Input file for MgB2C2.

2011-07-17 Thread Hongsheng Zhao
3) 1. 0 > B 3 +0 16 g 0.1278(2) 0.3415(1) 0.2438(2) 1. 0 > C 1 +0 8 e 0.25 0.9271(2) 0.25 1. 0 > C 2 +0 8 f 0 -.0792(2) 0.2314(2) 1. 0 > C 3 +0 16 g 0.1245(2) 0.1750(1) 0.2231(1) 1. 0 / > -- > GAO Zhe > CMC Lab, MSE, SNU, Seoul, S.Korea From where do you obtain these informat

[Pw_forum] Input file for MgB2C2.

2011-07-17 Thread Hongsheng Zhao
tment of Physics, Chemistry, and Biology (IFM), Linkoping > University, Sweden > Theoretical Physics Department, Moscow State Institute of Steel & > Alloys, Russia, > isaev at ifm.liu.se, eyvaz_isaev at yahoo.com > -----

[Pw_forum] Input file for MgB2C2.

2011-07-17 Thread Hongsheng Zhao
9 1.35978900 -6.38617500 -2.06539710 C -0.2995 0.0505 0.2231-1.35978900 1.65567500 1.66410290 I want to construct the corresponding crystal structure information for pwscf based on the above content. Any hints? Regards -- Hongsheng Zhao School of Ph

[Pw_forum] On the doping modeling: how to determine all of the non-equivalent doping configurations?

2011-07-10 Thread Hongsheng Zhao
total energy. The issue is the how to determine these non-equivalent doping configurations and then construct the correspond input file for each. Any hints will be highly appreciated. Best regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University

[Pw_forum] can pwscf compute elastic constant?

2011-07-07 Thread Hongsheng Zhao
coordinates, corresponding to each strain state. SB I.e., in general case, you should do "calculation = relax " for each strain when minimizing the energy. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] charged defect in a unit cell

2011-07-03 Thread Hongsheng Zhao
On 07/01/2011 05:19 PM, Giuseppe Mattioli wrote: > Dear Tram Bui > First, you may want to carefully read the following paper: > > Van de Walle, C. G.; Neugebauer, J. J. Appl. Phys. 95, 3851 (2004) Should be J. Appl. Phys. 95, 3851 (2004). Best -- Hongsheng Zhao School of Physics an

[Pw_forum] About the md in pwscf.

2011-07-01 Thread Hongsheng Zhao
On 07/01/2011 08:11 PM, Stefano Baroni wrote: > > On Jul 1, 2011, at 1:14 PM, Hongsheng Zhao wrote: > >> Hi all, >> >> I've some puzzles on the md method fulfilled in pwscf. >> >> I know should be cp-based md within the pwscf. > > NO pw.x perfor

[Pw_forum] About the md in pwscf.

2011-07-01 Thread Hongsheng Zhao
Hi all, I've some puzzles on the md method fulfilled in pwscf. I know should be cp-based md within the pwscf. The issue of mine is: for which properties/systems should I consider to do a md relative calations using pwscf (md, vc-md)? Thank your for any hints. Best -- Hongsheng

[Pw_forum] error in vc-md at 700K, 72GPa calculations

2011-07-01 Thread Hongsheng Zhao
On 07/01/2011 03:18 PM, Stefano de Gironcoli wrote: > the unit of pressure is KBar.. you can know it from the documentation, > for instance INPUT_PW.html Thanks a lot for your hints. Best. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yi

[Pw_forum] error in vc-md at 700K, 72GPa calculations

2011-07-01 Thread Hongsheng Zhao
or the other things you mentioned above, perhaps you can find hints from the same place. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] how to calculate elastic constants

2011-06-30 Thread Hongsheng Zhao
code and can coorperate with pwscf/vasp/siesta, and so on. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] how to calculate elastic constants

2011-06-30 Thread Hongsheng Zhao
ternal degrees of freedom in the supercell. Otherwise, you should do a non-variable cell geometry optimization to obtain the total energy for each strain step. > > These things, you can find anywhere in DFT papers. Also use google for > best support. -- Hongsheng Zhao Schoo

[Pw_forum] Which coordinates of K point should be used, referencing to reciprocal CONVENTIONAL vectors or reciprocal PRIMITIVE vectors?

2011-06-30 Thread Hongsheng Zhao
therwise, it may cause a waste of time and cpu. Regards. > > stefano > > On 06/29/2011 02:30 PM, Hongsheng Zhao wrote: >> On 06/29/2011 02:29 PM, Paolo Giannozzi wrote: >>> On Jun 29, 2011, at 2:16 , Hongsheng Zhao wrote: >>> >>>> >

[Pw_forum] Which coordinates of K point should be used, referencing to reciprocal CONVENTIONAL vectors or reciprocal PRIMITIVE vectors?

2011-06-29 Thread Hongsheng Zhao
On 06/29/2011 02:29 PM, Paolo Giannozzi wrote: > On Jun 29, 2011, at 2:16 , Hongsheng Zhao wrote: > >> > For a set of lattice vectors used for our supercell, the corresponding >> > reciprocal vectors may have two different forms: > no, the three vectors that generate

[Pw_forum] Which coordinates of K point should be used, referencing to reciprocal CONVENTIONAL vectors or reciprocal PRIMITIVE vectors?

2011-06-29 Thread Hongsheng Zhao
On 06/29/2011 11:24 AM, jia chen wrote: > Hi Hongsheng, > > You can find definitions of lattice vectors in INPUT_PW.txt and > calculate reciprocal vectors according to definition of reciprocal > vector. The name sometimes doesn't matter. Good, thanks a lot. I've got it

[Pw_forum] Which coordinates of K point should be used, referencing to reciprocal CONVENTIONAL vectors or reciprocal PRIMITIVE vectors?

2011-06-29 Thread Hongsheng Zhao
reciprocal CONVENTIONAL vectors or reciprocal PRIMITIVE vectors? Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] The issue of k-points in CARTESIAN coordinates obtained by XCrySDen-1.5.24.

2011-06-29 Thread Hongsheng Zhao
On 06/28/2011 09:45 PM, jia chen wrote: > Hi Hongsheng, > > The difference is 2*pi, I guess it is just a matter of convention. Thanks a lot, I've got it. > > Regards > jia > > On Tue, Jun 28, 2011 at 9:22 AM, Hongsheng Zhao > wrote: >> Dear Prof. Tone a

[Pw_forum] The issue of k-points in CARTESIAN coordinates obtained by XCrySDen-1.5.24.

2011-06-28 Thread Hongsheng Zhao
.8510 0 As you can see, your XCrySDen gives the CARTESIAN coordinates for K point ( 0.30.30.0 ) as follows: 0.234580.135430.0K I cann't figure out what's the reason. Could you please give me some hints on this issue? Attached please find al

[Pw_forum] About the naming rule for k points.

2011-06-24 Thread Hongsheng Zhao
n them automatically? Regards. > > Ciao > Lars > > 2011/6/24 Hongsheng Zhao <mailto:zhaohscas at yahoo.com.cn>> > > Hi all, > > It's known to all that in the BZ, we usually use specific lables to > denoting k points, say, G, L, M, K, H, a

[Pw_forum] Compute the distance between two point in reciprocal lattice.

2011-06-24 Thread Hongsheng Zhao
? Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Compute the distance between two point in reciprocal lattice.

2011-06-24 Thread Hongsheng Zhao
? Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] About the naming rule for k points.

2011-06-24 Thread Hongsheng Zhao
? Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Compatibility between XCrySDen and Quantum ESPRESSO

2011-06-23 Thread Hongsheng Zhao
e, the pc of my office cann't run smoothly when I install the amd64 distribution of Debian (i.e., x86_64 OS). I don't know the reason. Based on the above situation, I use i386 distribution of Debian . Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Nin

[Pw_forum] Compatibility between XCrySDen and Quantum ESPRESSO

2011-06-18 Thread Hongsheng Zhao
on my Debian box. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] How to calculate the energy barrier for nanoribbon?

2011-06-12 Thread Hongsheng Zhao
. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Interface model and calculation with pwscf.

2011-06-09 Thread Hongsheng Zhao
Hi all, Does someone here has the experience on studing the *interface* with pwscf. Could someone please give some hints on the model file and the calculation steps? Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Strange message when running the svn version of pwgui for the first time.

2011-06-08 Thread Hongsheng Zhao
On 06/08/2011 06:46 AM, Tone Kokalj wrote: > This message explains the problem. There is no make.sys in > the /home/werner/espresso/espresso, which means you didn't run the > configure ! > > Regards, Tone Thanks a lot, I've got it. Regards. -- Hongsheng Zhao School

[Pw_forum] Strange message when running the svn version of pwgui for the first time.

2011-06-08 Thread Hongsheng Zhao
nit" (now the "make svninit") merely builds the QE > documentation that the PWgui uses + makes a few links. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Strange message when running the svn version of pwgui for the first time.

2011-06-08 Thread Hongsheng Zhao
rner/GUI/PWgui/doc/pwdocs' make: [cvsinit] Error 2 (ignored) if test ! -d lib; then mkdir lib; fi cd lib/; rm -f Guib-*; cd lib/; ln -sf /home/werner/GUI/Guib Guib-0.5 > Anyway, instead of using the svn version of PWgui, you may also use the > source PWgui-4.3.tar.gz package. Unless you wa

[Pw_forum] About the CVS version of PWgui.

2011-06-08 Thread Hongsheng Zhao
On 06/08/2011 02:31 AM, Lorenzo Paulatto wrote: >> of course including pwgui > i don't know, but you'll see Surely, it does includes pwgui as the cvs version does. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Strange message when running the svn version of pwgui for the first time.

2011-06-08 Thread Hongsheng Zhao
rsion, why it give me the above informations on 'CVS version'? Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] About the CVS version of PWgui.

2011-06-08 Thread Hongsheng Zhao
On 06/08/2011 12:47 PM, Hongsheng Zhao wrote: >> this will do the trick: >> svn checkout svn://scm.qe-forge.org/scmrepos/svn/q-e/trunk espresso > Good, Thanks a lot, I've got it. Another issue: why we use SVN for > pwgui, and cvs for pwscf currently? > I think, this wi

[Pw_forum] About the CVS version of PWgui.

2011-06-08 Thread Hongsheng Zhao
n for using them with the latest development version. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China -- next part -- An HTML attachment was scrubbed... URL: http://www.democritos.it/piperma

[Pw_forum] About the CVS version of PWgui.

2011-06-06 Thread Hongsheng Zhao
On 06/06/2011 05:46 AM, Paolo Giannozzi wrote: > On Jun 6, 2011, at 23:33 , Hongsheng Zhao wrote: > >> > But there isn't the INSTALL.cvs file in the PWgui-4.3.tgz at all. > not a problem, since there isn't a CVS version any longer. > For the developer (svn) versi

[Pw_forum] Defining 1-D Graphene Nanoribbon

2011-06-06 Thread Hongsheng Zhao
On 06/05/2011 04:43 PM, swapnil chandratre wrote: [snipped] Your input file doesn't have the &CONTROL namelists. This should be a syntax error at least. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] About the CVS version of PWgui.

2011-06-06 Thread Hongsheng Zhao
tgz at all. Finally, I find the INSTALL.cvs from within the previous version of PWgui, but I don't know how to obtain the latest CVS version of PWgui based on the extremely brief description in the INSTALL.cvs file. Any hints on this? Regards. -- Hongsheng Zhao School of Physics

[Pw_forum] How many repeated units along the periodical direction should be used for nanowire/nanoribbon calculations?

2011-06-06 Thread Hongsheng Zhao
value. Am I right? Any hints/improvements for my above description will be highly appreciated. Thanks in advance. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China -- next part -- An HTML attac

[Pw_forum] Ensure the 1D periodical boundary condition along y axis when constructing a ZnO nanowire from the xyz file.

2011-06-04 Thread Hongsheng Zhao
what are the corresponding a, b, c lattice vectors should I use when putting my model within a tetragonal supercell? How can I obtain the corresponding supercell file, say, in cif format? Any hints will be highly appreciated. Thanks in advance. Regards. -- Hongsheng Zhao School of Physic

[Pw_forum] FFT grid and cutoff energy.

2011-05-31 Thread Hongsheng Zhao
ed on the selected cutoff energy. In other words, it is unnecessary to do a Independent FFT grid convergence test. Am I right? Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China -- next part -- An

[Pw_forum] How to obtain the binding energy ( in the unit of eV/Zn-O pair ) for Wurtsite ZnO?

2011-05-30 Thread Hongsheng Zhao
On 05/28/2011 10:18 AM, mohnish pandey wrote: > > > On Sun, May 29, 2011 at 4:33 AM, Hongsheng Zhao > mailto:zhaohscas at yahoo.com.cn>> wrote: > > On 05/28/2011 02:44 AM, mohnish pandey wrote: > > Dear Hongsheng, > All the four bon

[Pw_forum] How to obtain the binding energy ( in the unit of eV/Zn-O pair ) for Wurtsite ZnO?

2011-05-28 Thread Hongsheng Zhao
ttp://arxiv.org/ftp/cond-mat/papers/0610/0610002.pdf > http://prb.aps.org/pdf/PRB/v70/i5/e054104 Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] The difference between binding energy and cohesive energy.

2011-05-28 Thread Hongsheng Zhao
#x27; form, e.g. an O2 molecule for oxygen. Cohesive energy - the binding energy for the atoms of a crystal, measured against the state of neutral free atoms. But, I also read some references which regards them as same thing. Any hints? Regards. -- Hongsheng Zhao School of Physics and

[Pw_forum] Single point energy calculation within PWSCF.

2011-05-26 Thread Hongsheng Zhao
uilibrium lattice > parameter. If so, now you can run a "vc-relax" calculation to get the > zero pressure structure.. > > Hope this made any sense and didnt confuse you even more. > cheers, > emine kucukbenli, phd student, sissa, italy Thanks a lot for your systematic analysis

[Pw_forum] Single point energy calculation within PWSCF.

2011-05-25 Thread Hongsheng Zhao
achieve the same aim as 'vc-relax' done for me, am I right? I mean, if the energy, forces and stresses are all accurately converged based on a series of single-point energy calculations, then the final structure will also be accurate. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Single point energy calculation within PWSCF.

2011-05-25 Thread Hongsheng Zhao
ation? Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Is it possiable to do MP grid test based on grid density within pwscf?

2011-05-20 Thread Hongsheng Zhao
) fulfilled within pwscf? Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Script for MP grid sampling test.

2011-05-12 Thread Hongsheng Zhao
choosing them for a specific system? Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China -- next part -- An HTML attachment was scrubbed... URL: http://www.democritos.it/pipermail/pw_forum/attachments

[Pw_forum] Should we use a double bond or 2 H atoms to saturate the system?

2011-04-26 Thread Hongsheng Zhao
l the bulk rather than using a big, > centro-symmetric slab. But, in my mind, some times, people use a big slab with hydrogen to terminating the dangling bond. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China

[Pw_forum] Should we use a double bond or 2 H atoms to saturate the system?

2011-04-26 Thread Hongsheng Zhao
On 04/26/2011 02:49 AM, Lorenzo Paulatto wrote: > Dear Hongsheng Zhao, > there are many ways to saturate the bonds, and not all of them actually > make sense in experimental conditions. The matter is discussed quite in > depth in Phys. Rev. Lett. 101, 096402 (2008). Thanks a lot for a

[Pw_forum] Should we use a double bond or 2 H atoms to saturate the system?

2011-04-26 Thread Hongsheng Zhao
On 04/25/2011 07:04 AM, O. Baris Malcioglu wrote: > Dear Hongsheng Zhao, > > Unless you are asking if someone ever tried forcing a particular > "bond" or aromaticity in PW explicitly (one can try to constrain some > number of KS states trying to estimate a particular bond,

[Pw_forum] Should we use a double bond or 2 H atoms to saturate the system?

2011-04-25 Thread Hongsheng Zhao
s the passivation results is concerned, adding 2 atoms is equivalent to introduce a double bond between the two adjacent ions in the system, am I right? If so, Should we use a double bond or 2 H atoms to saturate the system? Regards. -- Hongsheng Zhao School of Physics and Electrical Inform

[Pw_forum] The issue of PWgui-4.2.

2011-03-13 Thread Hongsheng Zhao
vel #0 [list $w invoke]" (procedure "tk::ButtonUp" line 24) invoked from within "tk::ButtonUp .gUI0_toolbaropen.0" (command bound to event) - Any hints on this issue? Thanks in advance. Regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China GnuPG DSA: 0xD108493 2011-3-13

[Pw_forum] About the optical absorption edge juded from the absorption coefficient spectrum graph.

2011-02-03 Thread Hongsheng Zhao
e from the absorption coefficient spectrum graph. Thanks in advance. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia University, Yinchuan 750021, China GnuPG DSA: 0xD108493 2011-2-3 -- next part -- A non-text attachment was scrubbed... Name: fig

[Pw_forum] On the doping modeling.

2010-12-25 Thread Hongsheng Zhao
Dear PWSCF users, I've 2*2*2 supercell of hcp Mg and want doping Al into it. Suppose 2 atoms will be substituted by Al in this supercell, I want to know which 2 atoms should I selected to do the substitution. Any hints will be highly appreciated. Best regards. -- Hongsheng

[Pw_forum] About the relationship between enthalpy and pressure.

2010-12-25 Thread Hongsheng Zhao
Dear PWSCF users, We all know that, the pressure-Volume, and energy--Volume curve can be obtained by fitting of EOS. But what's the relationship between enthalpy and pressure? Best regards. -- Hongsheng Zhao School of Physics and Electrical Information Science, Ningxia Unive

[Pw_forum] About the difference between the energy obtained from geometry optimization and single energy calculation.

2010-12-24 Thread Hongsheng Zhao
Dear PWSCF users, The geometry optimization can give the minimal energy of our system. What's the difference between the energy obtained from geometry optimization and the single energy calculation? Best regards. -- Hongsheng Zhao School of Physics and Electrical Information Sc

[Pw_forum] temperature dependent density functional theory

2009-06-06 Thread Hongsheng Zhao
On Saturday, June 6, 2009 at 12:16, kyin.cn at gmail.com wrote: > On Sat, 2009-06-06 at 00:09 +0800, Hongsheng Zhao wrote: >> By what means/parameters can I apply a finite temperature to my >> system? >> > Dear Zhao, > You can extend to finite temperature

[Pw_forum] temperature dependent density functional theory

2009-06-06 Thread Hongsheng Zhao
in most cases, you should be > just fine by applying a finite temperature to your atoms and using > normal DFT. By what means/parameters can I apply a finite temperature to my system? Kind regards, -- Hongsheng Zhao Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 2009-6-6

[Pw_forum] temperature dependent density functional theory

2009-06-05 Thread Hongsheng Zhao
On Friday, June 5, 2009 at 21:02, akohlmey at cmm.chem.upenn.edu wrote: > On Fri, 2009-06-05 at 18:29 +0800, Hongsheng Zhao wrote: >> Dear all, >> >> I've learned that time dependent density functional theory, but never >> learned that how to something li

[Pw_forum] temperature dependent density functional theory

2009-06-05 Thread Hongsheng Zhao
Kind regards, -- Hongsheng Zhao Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 2009-6-5

[Pw_forum] 3D charge density with Xcrysden

2009-04-28 Thread Hongsheng Zhao
tself can extract a 2D charge density plot for a specific plane based on the 3D one. If so, what's the concrete steps? Best regards, -- Hongsheng Zhao Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 2009-4-28

[Pw_forum] Consider the relativistic effect for heavy element within pwscf.

2008-12-28 Thread Hongsheng Zhao
iated. Thanks in advance. Regards, -- Hongsheng Zhao Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 2008-12-27

[Pw_forum] ab initio vs. first principles.

2008-12-22 Thread Hongsheng Zhao
On Monday, December 22, 2008 at 4:32, baroni at sissa.it wrote: > none - sb Thanks all the helps and discussions here. I've got it by and large. -- Hongsheng Zhao Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 2008-12-22

[Pw_forum] ab initio vs. first principles.

2008-12-21 Thread Hongsheng Zhao
do not make > any assumption, such as concerning models and/or fitting parameters. Thanks a lot. -- Hongsheng Zhao Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 2008-12-21

[Pw_forum] ab initio vs. first principles.

2008-12-21 Thread Hongsheng Zhao
Hi all, Some times we say ab initio, sometimes first principles. Actually, I find in many case people use them to explain one another. But the fact may be not the case, who can give some hints on the differences between ab initio and first principles? Regards, -- Hongsheng Zhao Xinjiang

[Pw_forum] Question on the tools used to visualize the point defects, such as vacancy and interstitial configurations.

2008-12-16 Thread Hongsheng Zhao
lt to visualize. Would you give me some hints on the tools used to visualize the point defects, such as vacancy and interstitial configurations? Regards, -- Hongsheng Zhao Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 2008-

[Pw_forum] Why uspp Hf has the p state weights in pdos analysis?

2008-08-26 Thread Hongsheng Zhao
Dear users, I use the Hf 5d2 6s2 in the uspp scheme for my research, in the pdos analysis of my results, I can also find the Hf's p state weights in pdos analysis. Why does this happen? Sincerely yours, PS The attachment is the snapshot of the p state of Hf. -- Hongsheng Zhao Xin

[Pw_forum] about charge density

2008-08-26 Thread Hongsheng Zhao
pwgui's help. Sincerely yours, -- Hongsheng Zhao Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 2008-8-26 __ ??? http://cn.mail.yahoo.com

[Pw_forum] The corresponding electronic state of the band gap.

2008-08-21 Thread Hongsheng Zhao
gap? In detail, in the above computation, the p states are comes from Ba and O simultaneously, so why can they only said the O 2p? Sincerely yours, -- Hongsheng Zhao Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences GnuPG DSA: 0xD108493 2008-8-21