[Wien] Converging full hybrid calculation

[Tran, Fabien]

Actually, it is better to start the calculation with alpha=0.05 just after a PBE calculation:
1) PBE calculation
2) save_lapw PBE
3) init_hf_lapw (choose alpha=0.05 in case.inhf)
4) run_lapw -hf ...

________________________________________
From: Wien <wien-bounces at zeus.theochem.tuwien.ac.at> on behalf of shamik chakrabarti <shamik15041981 at gmail.com>
Sent: Monday, January 17, 2022 12:36 PM
To: A Mailing list for WIEN2k users
Subject: [Wien] Converging full hybrid calculation

Dear All,
           For converging full hybrid calculation I have done the following;

(1) Initially the simulation was running with alpha=0.25. As this parameter is not leading to the convergence, I have stopped it.
(2) I have executed clean_lapw to remove case.vectorhf from earlier calculation
(3) Set alpha=0.05 & started the simulation

Although I have reached the energy convergence criteria 0.0001, the charge convergence is oscillating around 0.01. Should I decrease alpha, even more, to get the charge convergence & eventually get back to alpha=0.25 at the end after getting the required convergence?

with regards,
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--
Dr. Shamik Chakrabarti
Research Fellow
Department of Physics
Indian Institute of Technology Patna
Bihta-801103
Patna
Bihar, India