Re: [Pw_forum] Carrier concentration in Si

2015-09-30 Thread Khara, Galvin
t: Re: [Pw_forum] Carrier concentration in Si deal Galvin, I think that you can assume that band structure does not depend on temperature. Furthermore, a realistic temperature corresponds to a Fermi-Dirac smearing temperature which is very small. I.e. 300K correspond to just 2 mRy. It would take a h

Re: [Pw_forum] Carrier concentration in Si

2015-09-15 Thread Peter Cybertron
Hi Galvin, Is it a problem in semiconductor class? What is wrong with the "classical" solution? Yun-Peng On 09/15/2015 06:57 AM, Khara, Galvin wrote: Hey, I was wondering if there was a (relatively) straightforward way of calculating the carrier concentration of a system using quantum esp

Re: [Pw_forum] Carrier concentration in Si

2015-09-15 Thread Lorenzo Paulatto
deal Galvin, I think that you can assume that band structure does not depend on temperature. Furthermore, a realistic temperature corresponds to a Fermi-Dirac smearing temperature which is very small. I.e. 300K correspond to just 2 mRy. It would take a huge amount of k-points to converge such a

[Pw_forum] Carrier concentration in Si

2015-09-15 Thread Khara, Galvin
Hey, I was wondering if there was a (relatively) straightforward way of calculating the carrier concentration of a system using quantum espresso? I want to apply an electronic temperature using fermi-dirac smearing, and calculate the carrier concentration for Silicon at various electronic tempe