Magnons and magnon-phonon interactions in Iron

R. F. Sabiryanov, S. S. Jaswal

Research output: Contribution to journalArticle

43 Scopus citations

Abstract

The principle of a novel device, which is called a superconducting spin switch or a spin valve for supercurrent, is proposed and theoretically justified. It is based on a four-layer antiferromagnet/ferromagnet/superconductor/ferromagnet spin-valve-like structure. Calculations show that this structure has either zero value or lower superconducting transition temperature for the parallel alignment of magnetizations in the ferromagnetic layers as compared with an antiparallel alignment of magnetizations. Thus, the supercurrent flowing through the superconducting layer can be switched by rotating the magnetization of the top free ferromagnetic layer by a weak external magnetic field.

Original languageEnglish (US)
Pages (from-to)2062-2064
Number of pages3
JournalPhysical Review Letters
Volume83
Issue number10
DOIs
StatePublished - 1999

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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