Exact time-dependent density-functional potentials for strongly correlated tunneling electrons

M.J.P. Hodgson, J.D. Ramsden, Jacob B.J. Chapman, P. Lillystone, R.W. Godby

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By propagating the many-body Schrödinger equation, we determine the exact time-dependent Kohn-Sham potential for a system of strongly correlated electrons which undergo field-induced tunneling. Numerous features are entirely absent from the approximations commonly used in time-dependent density-functional theory. The self-interaction correction is strong and time dependent, owing to electron localization, and prominent dynamic spatial potential steps arise from minima in the charge density, as modified by the Coulomb interaction experienced by the partially tunneled electron.
Original languageEnglish
Article number241102
JournalPhysical Review B: Condensed Matter and Materials Physics
Issue number24
Publication statusPublished - 2 Dec 2013

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