[QE-users] stresses and forces in applied electric fields

[Ronald Cohen]

>> 
>> I am wondering the status of including stresses (and forces?) in applied electric fields. I find the following code:
>>  !
>>   !   Electric field contribution
>>   !
>>   sigmael(:,:)=0.d0
>>   sigmaion(:,:)=0.d0
>>   !the following is for calculating the improper stress tensor
>> !  call stress_bp_efield (sigmael )
>> !  call stress_ion_efield (sigmaion )
>> 
>> but the commented out routines do not exist. Also, the berrys_phase forces contribution seems to include only the force on the ion core. Any comments on this would be appreciated, especially the name of the person working on this.
>> 
>> Sincerely,
>> 
>> Ron
>> 
>> ---
>> Ronald Cohen
>> Geophysical Laboratory
>> Carnegie Institution
>> 5251 Broad Branch Rd., N.W.
>> Washington, D.C. 20015
>> rcohen at carnegiescience.edu <mailto:rcohen at carnegiescience.edu>
>> office: 202-478-8937 <tel:(202)%20478-8937>
>> skype: ronaldcohen
>> https://twitter.com/recohen3 <https://twitter.com/recohen3>
>> https://www.linkedin.com/profile/view?id=163327727 <https://www.linkedin.com/profile/view?id=163327727>	
>> 
> 

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