Superconducting phase domains for memory applications

S.V. Bakurskiy, N.V. Klenov, I.I. Soloviev, M..Y. Kupriyanov, Alexandre Avraamovitch Golubov

Research output: Contribution to journalArticleAcademicpeer-review

21 Citations (Scopus)

Abstract

In this work, we study theoretically the properties of S-F/N-sIS type Josephson junctions in the frame of the quasiclassical Usadel formalism. The structure consists of two superconducting electrodes (S), a tunnel barrier (I), a combined normal metal/ferromagnet (N/F) interlayer, and a thin superconducting film (s). We demonstrate the breakdown of a spatial uniformity of the superconducting order in the s-film and its decomposition into domains with a phase shift π. The effect is sensitive to the thickness of the s layer and the widths of the F and N films in the direction along the sIS interface. We predict the existence of a regime where the structure has two energy minima and can be switched between them by an electric current injected laterally into the structure. The state of the system can be non-destructively read by an electric current flowing across the junction.
Original languageEnglish
Article number042602
Pages (from-to)042602-
JournalApplied physics letters
Volume108
Issue number042602
DOIs
Publication statusPublished - 2016

Keywords

  • IR-103412
  • METIS-320364

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