IPEAD: Difference between revisions
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[[The_VASP_Manual|Contents]] | [[The_VASP_Manual|Contents]] | ||
[[Category:INCAR]][[Category:Berry phases]] | [[Category:INCAR]][[Category:Dielectric Properties]][[Category:Berry phases]] | ||
Revision as of 13:52, 8 March 2019
IPEAD = 1 | 2 | 3 | 4
Default: IPEAD = 4
Description: IPEAD specifies the order of the finite difference stencil used to compute the derivative of the cell-periodic part of the orbitals w.r.t. k, |∇kunk⟩ (LPEAD=.TRUE.), and the derivative of the polarization w.r.t. the orbitals, δP/δ⟨ψnk| for (LCALCEPS=.TRUE., or EFIELD_PEAD≠0).
Related Tags and Sections
LPEAD, LCALCEPS, EFIELD_PEAD, Berry phases and finite electric fields