Re: [Pw_forum] Cell parameters representation for cubic fcc(111) Iridium structure

2015-09-25 Thread Venkataramana Imandi
Dear Arles V. Gil Rebaza,

What is significance of cos60 and sin60. I don't know much.

Thanks in advance.




Dear Venkataramana, if you have a FCC(111) surface, probabily you should
have these lattice vectors (is a option representation)

a0  0
b*cos60  b*sin60 0
00  c+h

where a, b, and c are the distance that you are reporting, and "h" is the
vacuum to simulate a surface.

Best.

Arles V. Gil Rebaza
IFLP-Argentina


On Fri, Sep 25, 2015 at 9:46 PM, Venkataramana Imandi <
venkataramana.ima...@gmail.com> wrote:

> Dear all,
>
> I generated cubic fcc(111) in the form of 3x2x2 type structure (6 layers
> and each layer has 12 atoms) with Iridium (lattice constant:3.839
> angstroms).
> In the generated coordinates file, crystal axes are 8.14374880,
> 9.40359112, 13.29868610 (generated coordinate are attached). Can i represent
> CELL_PARAMETERS angstrom in addition to ibrav=0 in the system namelist as
> shown below (for whole Iridium structure).
> 8.14374880  0.0.0
> 0.  9.403591120.0
> 0.  0.13.29868610
>
> Is the above representation correct (maintains cubic fcc), if not, please
> suggest me how to represent CELL_PARAMETERS for whole Iridium structure.
> I am new user and please suggest me correct way of doing calculations.
>
> Again, I want to keep manually methane molecule on the top of Iridium (on
> the top of z-axis, above 5 angstroms from the top atom in the z-axis), then
> the resultant whole structure maintain fcc cubic. Please give some
> suggestions. I am new to quantum espresso calculations.
>
>   72  72  72  72
>  8.14374880 9.4035911213.29868610 0.
> 0. 0.  MD time =   0.000E+00 ps
> Ir   6.78645733  5.48542817  6.64934305
> Ir   5.42916587  7.83632593  6.64934305
> Ir   5.42916587  4.70179556  4.43289536
> Ir   6.78645733  7.05269336  4.43289536
> Ir   5.42916587  6.26906075  2.21644768
> Ir   6.78645733  8.61995854  2.21644768
> Ir   4.07187440  5.48542817  6.64934305
> Ir   2.71458293  7.83632593  6.64934305
> Ir   2.71458293  4.70179556  4.43289536
> Ir   4.07187440  7.05269336  4.43289536
> Ir   2.71458293  6.26906075  2.21644768
> Ir   4.07187440  8.61995854  2.21644768
> Ir   1.35729146  5.48542817  6.64934305
> Ir   0.  7.83632593  6.64934305
> Ir   0.  4.70179556  4.43289536
> Ir   1.35729146  7.05269336  4.43289536
> Ir   0.  6.26906075  2.21644768
> Ir   1.35729146  8.61995854  2.21644768
> Ir   6.78645733  0.78363261  6.64934305
> Ir   5.42916587  3.13453037  6.64934305
> Ir   5.42916587  0.  4.43289536
> Ir   6.78645733  2.35089780  4.43289536
> Ir   5.42916587  1.56726519  2.21644768
> Ir   6.78645733  3.91816298  2.21644768
> Ir   4.07187440  0.78363261  6.64934305
> Ir   2.71458293  3.13453037  6.64934305
> Ir   2.71458293  0.  4.43289536
> Ir   4.07187440  2.35089780  4.43289536
> Ir   2.71458293  1.56726519  2.21644768
> Ir   4.07187440  3.91816298  2.21644768
> Ir   1.35729146  0.78363261  6.64934305
> Ir   0.  3.13453037  6.64934305
> Ir   0.  0.  4.43289536
> Ir   1.35729146  2.35089780  4.43289536
> Ir   0.  1.56726519  2.21644768
> Ir   1.35729146  3.91816298  2.21644768
> Ir   6.78645733  5.48542817  0.
> Ir   5.42916587  7.83632593  0.
> Ir   5.42916587  4.70179556 -2.21644769
> Ir   6.78645733  7.05269336 -2.21644769
> Ir   5.42916587  6.26906075 -4.43289537
> Ir   6.78645733  8.61995854 -4.43289537
> Ir   4.07187440  5.48542817  0.
> Ir   2.71458293  7.83632593  0.
> Ir   2.71458293  4.70179556 -2.21644769
> Ir   4.07187440  7.05269336 -2.21644769
> Ir   2.71458293  6.26906075 -4.43289537
> Ir   4.07187440  8.61995854 -4.43289537
> Ir   1.35729146  5.48542817  

Re: [Pw_forum] Cell parameters representation for cubic fcc(111) Iridium structure

2015-09-25 Thread Venkataramana Imandi
 Dear  Arles V. Gil Rebaza,

What is the significance of cos60 and sin60. I don't know much.

Thanks in advance

Venkat

PhD student

IIT Bombay

Mumbai


Dear Venkataramana, if you have a FCC(111) surface, probabily you should
have these lattice vectors (is a option representation)

a0  0
b*cos60  b*sin60 0
00  c+h

where a, b, and c are the distance that you are reporting, and "h" is the
vacuum to simulate a surface.

Best.

Arles V. Gil Rebaza
IFLP-Argentina




On Fri, Sep 25, 2015 at 9:46 PM, Venkataramana Imandi <
venkataramana.ima...@gmail.com> wrote:

> Dear all,
>
> I generated cubic fcc(111) in the form of 3x2x2 type structure (6 layers
> and each layer has 12 atoms) with Iridium (lattice constant:3.839
> angstroms).
> In the generated coordinates file, crystal axes are 8.14374880,
> 9.40359112, 13.29868610 (generated coordinate are attached). Can i represent
> CELL_PARAMETERS angstrom in addition to ibrav=0 in the system namelist as
> shown below (for whole Iridium structure).
> 8.14374880  0.0.0
> 0.  9.403591120.0
> 0.  0.13.29868610
>
> Is the above representation correct (maintains cubic fcc), if not, please
> suggest me how to represent CELL_PARAMETERS for whole Iridium structure.
> I am new user and please suggest me correct way of doing calculations.
>
> Again, I want to keep manually methane molecule on the top of Iridium (on
> the top of z-axis, above 5 angstroms from the top atom in the z-axis), then
> the resultant whole structure maintain fcc cubic. Please give some
> suggestions. I am new to quantum espresso calculations.
>
>   72  72  72  72
>  8.14374880 9.4035911213.29868610 0.
> 0. 0.  MD time =   0.000E+00 ps
> Ir   6.78645733  5.48542817  6.64934305
> Ir   5.42916587  7.83632593  6.64934305
> Ir   5.42916587  4.70179556  4.43289536
> Ir   6.78645733  7.05269336  4.43289536
> Ir   5.42916587  6.26906075  2.21644768
> Ir   6.78645733  8.61995854  2.21644768
> Ir   4.07187440  5.48542817  6.64934305
> Ir   2.71458293  7.83632593  6.64934305
> Ir   2.71458293  4.70179556  4.43289536
> Ir   4.07187440  7.05269336  4.43289536
> Ir   2.71458293  6.26906075  2.21644768
> Ir   4.07187440  8.61995854  2.21644768
> Ir   1.35729146  5.48542817  6.64934305
> Ir   0.  7.83632593  6.64934305
> Ir   0.  4.70179556  4.43289536
> Ir   1.35729146  7.05269336  4.43289536
> Ir   0.  6.26906075  2.21644768
> Ir   1.35729146  8.61995854  2.21644768
> Ir   6.78645733  0.78363261  6.64934305
> Ir   5.42916587  3.13453037  6.64934305
> Ir   5.42916587  0.  4.43289536
> Ir   6.78645733  2.35089780  4.43289536
> Ir   5.42916587  1.56726519  2.21644768
> Ir   6.78645733  3.91816298  2.21644768
> Ir   4.07187440  0.78363261  6.64934305
> Ir   2.71458293  3.13453037  6.64934305
> Ir   2.71458293  0.  4.43289536
> Ir   4.07187440  2.35089780  4.43289536
> Ir   2.71458293  1.56726519  2.21644768
> Ir   4.07187440  3.91816298  2.21644768
> Ir   1.35729146  0.78363261  6.64934305
> Ir   0.  3.13453037  6.64934305
> Ir   0.  0.  4.43289536
> Ir   1.35729146  2.35089780  4.43289536
> Ir   0.  1.56726519  2.21644768
> Ir   1.35729146  3.91816298  2.21644768
> Ir   6.78645733  5.48542817  0.
> Ir   5.42916587  7.83632593  0.
> Ir   5.42916587  4.70179556 -2.21644769
> Ir   6.78645733  7.05269336 -2.21644769
> Ir   5.42916587  6.26906075 -4.43289537
> Ir   6.78645733  8.61995854 -4.43289537
> Ir   4.07187440  5.48542817  0.
> Ir   2.71458293  7.83632593  0.
> Ir   2.71458293  4.70179556 -2.21644769
> Ir   4.07187440  7.05269336 -2.21644769
> Ir   2.71458293  6.26906075 -4.43289537
> Ir   4.07187440  8.61995854 -4.43289537
> Ir 

Re: [Pw_forum] Cell parameters representation for cubic fcc(111) Iridium structure

2015-09-25 Thread Arles V. Gil Rebaza
Dear Venkataramana, if you have a FCC(111) surface, probabily you should
have these lattice vectors (is a option representation)

a0  0
b*cos60  b*sin60 0
00  c+h

where a, b, and c are the distance that you are reporting, and "h" is the
vacuum to simulate a surface.

Best.

Arles V. Gil Rebaza
IFLP-Argentina

2015-09-25 13:16 GMT-03:00 Venkataramana Imandi <
venkataramana.ima...@gmail.com>:

> Dear all,
>
> I generated cubic fcc(111) in the form of 3x2x2 type structure (6 layers
> and each layer has 12 atoms) with Iridium (lattice constant:3.839
> angstroms).
> In the generated coordinates file, crystal axes are 8.14374880,
> 9.40359112, 13.29868610 (generated coordinate are attached). Can i represent
> CELL_PARAMETERS angstrom in addition to ibrav=0 in the system namelist as
> shown below (for whole Iridium structure).
> 8.14374880  0.0.0
> 0.  9.403591120.0
> 0.  0.13.29868610
>
> Is the above representation correct (maintains cubic fcc), if not, please
> suggest me how to represent CELL_PARAMETERS for whole Iridium structure.
> I am new user and please suggest me correct way of doing calculations.
>
> Again, I want to keep manually methane molecule on the top of Iridium (on
> the top of z-axis, above 5 angstroms from the top atom in the z-axis), then
> the resultant whole structure maintain fcc cubic. Please give some
> suggestions. I am new to quantum espresso calculations.
>
>   72  72  72  72
>  8.14374880 9.4035911213.29868610 0.
> 0. 0.  MD time =   0.000E+00 ps
> Ir   6.78645733  5.48542817  6.64934305
> Ir   5.42916587  7.83632593  6.64934305
> Ir   5.42916587  4.70179556  4.43289536
> Ir   6.78645733  7.05269336  4.43289536
> Ir   5.42916587  6.26906075  2.21644768
> Ir   6.78645733  8.61995854  2.21644768
> Ir   4.07187440  5.48542817  6.64934305
> Ir   2.71458293  7.83632593  6.64934305
> Ir   2.71458293  4.70179556  4.43289536
> Ir   4.07187440  7.05269336  4.43289536
> Ir   2.71458293  6.26906075  2.21644768
> Ir   4.07187440  8.61995854  2.21644768
> Ir   1.35729146  5.48542817  6.64934305
> Ir   0.  7.83632593  6.64934305
> Ir   0.  4.70179556  4.43289536
> Ir   1.35729146  7.05269336  4.43289536
> Ir   0.  6.26906075  2.21644768
> Ir   1.35729146  8.61995854  2.21644768
> Ir   6.78645733  0.78363261  6.64934305
> Ir   5.42916587  3.13453037  6.64934305
> Ir   5.42916587  0.  4.43289536
> Ir   6.78645733  2.35089780  4.43289536
> Ir   5.42916587  1.56726519  2.21644768
> Ir   6.78645733  3.91816298  2.21644768
> Ir   4.07187440  0.78363261  6.64934305
> Ir   2.71458293  3.13453037  6.64934305
> Ir   2.71458293  0.  4.43289536
> Ir   4.07187440  2.35089780  4.43289536
> Ir   2.71458293  1.56726519  2.21644768
> Ir   4.07187440  3.91816298  2.21644768
> Ir   1.35729146  0.78363261  6.64934305
> Ir   0.  3.13453037  6.64934305
> Ir   0.  0.  4.43289536
> Ir   1.35729146  2.35089780  4.43289536
> Ir   0.  1.56726519  2.21644768
> Ir   1.35729146  3.91816298  2.21644768
> Ir   6.78645733  5.48542817  0.
> Ir   5.42916587  7.83632593  0.
> Ir   5.42916587  4.70179556 -2.21644769
> Ir   6.78645733  7.05269336 -2.21644769
> Ir   5.42916587  6.26906075 -4.43289537
> Ir   6.78645733  8.61995854 -4.43289537
> Ir   4.07187440  5.48542817  0.
> Ir   2.71458293  7.83632593  0.
> Ir   2.71458293  4.70179556 -2.21644769
> Ir   4.07187440  7.05269336 -2.21644769
> Ir   2.71458293  6.26906075 -4.43289537
> Ir   4.07187440  8.61995854 -4.43289537
> Ir   1.35729146  5.48542817  0.
> Ir   0.  7.83632593  0.
> Ir   0.  4.701795

[Pw_forum] Cell parameters representation for cubic fcc(111) Iridium structure

2015-09-25 Thread Venkataramana Imandi
Dear all,

I generated cubic fcc(111) in the form of 3x2x2 type structure (6 layers
and each layer has 12 atoms) with Iridium (lattice constant:3.839
angstroms).
In the generated coordinates file, crystal axes are 8.14374880, 9.40359112,
13.29868610 (generated coordinate are attached). Can i represent
CELL_PARAMETERS angstrom in addition to ibrav=0 in the system namelist as
shown below (for whole Iridium structure).
8.14374880  0.0.0
0.  9.403591120.0
0.  0.13.29868610

Is the above representation correct (maintains cubic fcc), if not, please
suggest me how to represent CELL_PARAMETERS for whole Iridium structure.
I am new user and please suggest me correct way of doing calculations.

Again, I want to keep manually methane molecule on the top of Iridium (on
the top of z-axis, above 5 angstroms from the top atom in the z-axis), then
the resultant whole structure maintain fcc cubic. Please give some
suggestions. I am new to quantum espresso calculations.

  72  72  72  72
 8.14374880 9.4035911213.29868610 0.
0. 0.  MD time =   0.000E+00 ps
Ir   6.78645733  5.48542817  6.64934305
Ir   5.42916587  7.83632593  6.64934305
Ir   5.42916587  4.70179556  4.43289536
Ir   6.78645733  7.05269336  4.43289536
Ir   5.42916587  6.26906075  2.21644768
Ir   6.78645733  8.61995854  2.21644768
Ir   4.07187440  5.48542817  6.64934305
Ir   2.71458293  7.83632593  6.64934305
Ir   2.71458293  4.70179556  4.43289536
Ir   4.07187440  7.05269336  4.43289536
Ir   2.71458293  6.26906075  2.21644768
Ir   4.07187440  8.61995854  2.21644768
Ir   1.35729146  5.48542817  6.64934305
Ir   0.  7.83632593  6.64934305
Ir   0.  4.70179556  4.43289536
Ir   1.35729146  7.05269336  4.43289536
Ir   0.  6.26906075  2.21644768
Ir   1.35729146  8.61995854  2.21644768
Ir   6.78645733  0.78363261  6.64934305
Ir   5.42916587  3.13453037  6.64934305
Ir   5.42916587  0.  4.43289536
Ir   6.78645733  2.35089780  4.43289536
Ir   5.42916587  1.56726519  2.21644768
Ir   6.78645733  3.91816298  2.21644768
Ir   4.07187440  0.78363261  6.64934305
Ir   2.71458293  3.13453037  6.64934305
Ir   2.71458293  0.  4.43289536
Ir   4.07187440  2.35089780  4.43289536
Ir   2.71458293  1.56726519  2.21644768
Ir   4.07187440  3.91816298  2.21644768
Ir   1.35729146  0.78363261  6.64934305
Ir   0.  3.13453037  6.64934305
Ir   0.  0.  4.43289536
Ir   1.35729146  2.35089780  4.43289536
Ir   0.  1.56726519  2.21644768
Ir   1.35729146  3.91816298  2.21644768
Ir   6.78645733  5.48542817  0.
Ir   5.42916587  7.83632593  0.
Ir   5.42916587  4.70179556 -2.21644769
Ir   6.78645733  7.05269336 -2.21644769
Ir   5.42916587  6.26906075 -4.43289537
Ir   6.78645733  8.61995854 -4.43289537
Ir   4.07187440  5.48542817  0.
Ir   2.71458293  7.83632593  0.
Ir   2.71458293  4.70179556 -2.21644769
Ir   4.07187440  7.05269336 -2.21644769
Ir   2.71458293  6.26906075 -4.43289537
Ir   4.07187440  8.61995854 -4.43289537
Ir   1.35729146  5.48542817  0.
Ir   0.  7.83632593  0.
Ir   0.  4.70179556 -2.21644769
Ir   1.35729146  7.05269336 -2.21644769
Ir   0.  6.26906075 -4.43289537
Ir   1.35729146  8.61995854 -4.43289537
Ir   6.78645733  0.78363261  0.
Ir   5.42916587  3.13453037  0.
Ir   5.42916587  0. -2.21644769
Ir   6.78645733  2.35089780 -2.21644769
Ir   5.42916587  1.56726519 -4.43289537
Ir   6.78645733  3.91816298