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

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

Research output: Contribution to journalArticle

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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 - Jun 18 2010

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quantum dots
nanowires

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Ferromagnetic proximity effect in a ferromagnet-quantum-dot-superconductor device. / Hofstetter, L.; Geresdi, A.; Aagesen, M.; Nygård, J.; Schönenberger, C.; Csonka, S.

In: Physical Review Letters, Vol. 104, No. 24, 246804, 18.06.2010.

Research output: Contribution to journalArticle

Hofstetter, L. ; Geresdi, A. ; Aagesen, M. ; Nygård, J. ; Schönenberger, C. ; Csonka, S. / Ferromagnetic proximity effect in a ferromagnet-quantum-dot-superconductor device. In: Physical Review Letters. 2010 ; Vol. 104, No. 24.
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