AMIN: Difference between revisions
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{{TAGDEF|AMIN|[real]|min(0.1,{{TAG|AMIX}},{{TAG|AMIX_MAG}})}} | {{TAGDEF|AMIN|[real]|min(0.1,{{TAG|AMIX}},{{TAG|AMIX_MAG}})}} | ||
Description: {{TAG|AMIN}} specifies the minimal mixing parameter in Kerker's initial approximation{{cite|kerker:prb:1981}} to the charge dielectric function used in the Broyden{{Cite|bluegel:phd:1988}}{{cite|johnson:prb:1988}}/Pulay{{cite|pulay:cpl:1980}} mixing scheme ({{TAG|IMIX}}=4, {{TAG|INIMIX}}=1). | Description: {{TAG|AMIN}} specifies the minimal mixing parameter in Kerker's initial approximation{{cite|kerker:prb:1981}} to the charge-dielectric function used in the Broyden{{Cite|bluegel:phd:1988}}{{cite|johnson:prb:1988}}/Pulay{{cite|pulay:cpl:1980}} mixing scheme ({{TAG|IMIX}}=4, {{TAG|INIMIX}}=1). | ||
---- | ---- | ||
Kerker's initial approximation{{cite|kerker:prb:1981}} for the charge dielectric function is given by | Kerker's initial approximation{{cite|kerker:prb:1981}} for the charge-dielectric function is given by | ||
:<math>A\times\min\left(\frac{G^2}{G^2+B^2},A_{\rm min}\right)</math> | :<math>A\times\min\left(\frac{G^2}{G^2+B^2},A_{\rm min}\right),</math> | ||
where <math>A</math>={{TAG|AMIX}}, <math>B</math>={{TAG|BMIX}}, and <math>A_{\rm min}</math>={{TAG|AMIN}}. | where <math>A</math>={{TAG|AMIX}}, <math>B</math>={{TAG|BMIX}}, and <math>A_{\rm min}</math>={{TAG|AMIN}}. | ||
== Related | == Related tags and articles == | ||
{{TAG|IMIX}}, | {{TAG|IMIX}}, | ||
{{TAG|INIMIX}}, | {{TAG|INIMIX}}, | ||
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== References == | == References == | ||
[[The_VASP_Manual|Contents]] | [[The_VASP_Manual|Contents]] | ||
[[Category:INCAR]][[Category:Electronic Minimization]][[Category:Density Mixing]] | [[Category:INCAR]][[Category:Electronic Minimization]][[Category:Density Mixing]] |
Revision as of 17:17, 1 April 2022
AMIN = [real]
Default: AMIN = min(0.1,AMIX,AMIX_MAG)
Description: AMIN specifies the minimal mixing parameter in Kerker's initial approximation[1] to the charge-dielectric function used in the Broyden[2][3]/Pulay[4] mixing scheme (IMIX=4, INIMIX=1).
Kerker's initial approximation[1] for the charge-dielectric function is given by
where =AMIX, =BMIX, and =AMIN.
Related tags and articles
IMIX, INIMIX, MAXMIX, AMIX, BMIX, AMIX_MAG, BMIX_MAG, MIXPRE, WC