[DFTB-Plus-User] graphene melting

[Bálint Aradi]

Dear Sandeep Kumar Singh,

>
> I am trying to calculate melting behaviour of graphene. I used time
> step=0.1fs and run the MD code using Anderson thermostat  upto temperature
> 6000K. I didnt see any defect formation (5-7 defect or Stones-Walls defect)
> during melting. Is DFTB+ parameters for  carbon  bond breaking are included
> in file? or anybody can suggest good thermostat or any mechanism to get
> correct results.

I am not an MD expert, but I'd try a stronger coupling of the
thermostat. Also the NoseHoover thermostat would be worth to have a look at.

  Best regards,

  Bálint


-- 
Dr. Bálint Aradi
Bremen Center for Computational Materials Science, University of Bremen
http://www.bccms.uni-bremen.de/cms/people/b_aradi/


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