Ferromagnetic proximity effect in a ferromagnet-quantum-dot-superconductor device

L. Hofstetter, A. Geresdi, M. Aagesen, J. Nygård, C. Schönenberger, S. Csonka

Research output: Article

62 Citations (Scopus)

Abstract

The ferromagnetic proximity effect is studied in InAs nanowire based quantum dots strongly coupled to a ferromagnetic (F) and a superconducting (S) lead. The influence of the F lead is detected through the splitting of the spin-1/2 Kondo resonance. We show that the F lead induces a local exchange field on the quantum dot, which has varying amplitude and sign depending on the charge states. The interplay of the F and S correlations generates an exchange field related subgap feature.

Original languageEnglish
Article number246804
JournalPhysical review letters
Volume104
Issue number24
DOIs
Publication statusPublished - jún. 18 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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