Spin-dependent surface screening in ferromagnets and magnetic tunnel junctions

Research output: Contribution to journalArticlepeer-review

154 Scopus citations


We have examined electron screening at the surface of a ferromagnetic metal. In an applied electric field, the surface develops an induced charge and magnetization. This can be described in terms of a novel spin-dependent screening electric field. A set of integrodifferential equations for screening potentials is derived and solved in some limiting cases. The significant implication relevant to spin-polarized transport in field emission and in magnetic tunnel junctions is discussed.

Original languageEnglish (US)
Pages (from-to)640-643
Number of pages4
JournalPhysical review letters
Issue number3
StatePublished - Jan 1 1999

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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