Dear VASP team,
I am wondering whether it is possible to do geometry optimization in the presence of core holes by setting ICORELEVEL = 2? I have tried some calculations but I am not sure whether it is physically correct to do so. It looks like I get a quasi Fermi level for electrons as well as a hole in the core levels. But what really happens in X-ray scattering experiments? It would be extremely helpful if someone could help me understand this
Best regards,
Bo
Structural relaxation in the presence of core holes
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Structural relaxation in the presence of core holes
Bo Peng
Nevile Research Fellow, Magdalene College
Theory of Condensed Matter Group, Cavendish Laboratory
University of Cambridge
https://www.tcm.phy.cam.ac.uk/profiles/bp432
https://www.magd.cam.ac.uk/user/peng
Nevile Research Fellow, Magdalene College
Theory of Condensed Matter Group, Cavendish Laboratory
University of Cambridge
https://www.tcm.phy.cam.ac.uk/profiles/bp432
https://www.magd.cam.ac.uk/user/peng
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- Administrator
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Re: Structural relaxation in the presence of core holes
Please provide input files for your problem.
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Re: Structural relaxation in the presence of core holes
Here you go! Any ideas whether this input makes sense?
#Startparameter
SYSTEM = Weyl
ISTART = 0
ICHARG = 2
PREC = Accurate
LREAL = .F.
ADDGRID = .T.
#Ionic
IBRION = 8
#ISIF = 0
NSW = 1
#POTIM = 0.5
#EDIFFG = -1E-02
#Electronic
#ENCUT = 800
NELM = 60
EDIFF = 1E-08
LCHARG = .F.
LWAVE = .F.
ISMEAR = 0
SIGMA = 0.01
GGA = PS
LEPSILON = .T.
#Core
ICORELEVEL = 2
CLNT = 2 # first atom species in the POSCAR
CLN = 2 #main quantum number of excited core electron
CLL = 0 #l quantum number of excited core electron
CLZ = 1 #electron count
#Startparameter
SYSTEM = Weyl
ISTART = 0
ICHARG = 2
PREC = Accurate
LREAL = .F.
ADDGRID = .T.
#Ionic
IBRION = 8
#ISIF = 0
NSW = 1
#POTIM = 0.5
#EDIFFG = -1E-02
#Electronic
#ENCUT = 800
NELM = 60
EDIFF = 1E-08
LCHARG = .F.
LWAVE = .F.
ISMEAR = 0
SIGMA = 0.01
GGA = PS
LEPSILON = .T.
#Core
ICORELEVEL = 2
CLNT = 2 # first atom species in the POSCAR
CLN = 2 #main quantum number of excited core electron
CLL = 0 #l quantum number of excited core electron
CLZ = 1 #electron count
Bo Peng
Nevile Research Fellow, Magdalene College
Theory of Condensed Matter Group, Cavendish Laboratory
University of Cambridge
https://www.tcm.phy.cam.ac.uk/profiles/bp432
https://www.magd.cam.ac.uk/user/peng
Nevile Research Fellow, Magdalene College
Theory of Condensed Matter Group, Cavendish Laboratory
University of Cambridge
https://www.tcm.phy.cam.ac.uk/profiles/bp432
https://www.magd.cam.ac.uk/user/peng