Ferromagnetic proximity effect in a ferromagnet-quantum-dot-superconductor device.
نویسندگان
چکیده
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.
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عنوان ژورنال:
- Physical review letters
دوره 104 24 شماره
صفحات -
تاریخ انتشار 2010