ABINIT Discussion Forums

dear all
Can the abinit compute the system under pressure?What 's the main parameter?
Looking forward to your reply.
jlwindy

Dear jlwindy,
You can use the strtarget input flag https://docs.abinit.org/variables/rlx/#strtarget.
Best wishes,
Eric

Dear Eric
Thank you for your reply.
In example v6.t18,strtarget -4.75846d-4 -4.75846d-4 -4.75846d-4 0 0 0.How to determine the direction of the pressure?What's the d-4?Does it express 10-4?
Looking forward to your reply.Thank you.
jlwindy

Dear jlwindy,
Yes, d-4 means 10^-4, old notation...
strtarget is the stress, meaning that negative stress ("compression") gives positive pressure and positive stress ("expansion") gives negative pressure.
Best wishes,
Eric

Dear Eric
Thank you very much.I get it.
best wishes.
jlwindy