[Pw_forum] About F_QHA.x
Yamit
amit99266 at rediffmail.com
Mon May 24 15:01:11 CEST 2010
Dear All
I have attempted to calculate the specific heat of Si using "F_QHA.x", and the calculated Silicon phonon dos as an input.
(The calculated Si phonon frequencies are in excellent agreement with available experimental data. )
As the output of "F_QHA.x", I have obtained the following results, (in QHA.out file)
############################################################################################################
# T in K, F_vib in Ry/cell, C_v in R (the universal gas constant by 3N modes), S in k_B
############################################################################################################
# T E_internal F_vibration Specific heat (C_v) Entropy
############################################################################################################
:
:
295.00 0.0139740852 0.0055747646 4.6621714979 4.4956255367
300.00 0.0141222695 0.0054311560 4.6966380876 4.5742737931
305.00 0.0142715257 0.0052850687 4.7298757363 4.6521815403
310.00 0.0144218157 0.0051365259 4.7619351485 4.7293532915
:
:
:
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