Ferromagnetic Proximity Effect in a Ferromagnet–Quantum-Dot–Superconductor Device
L. Hofstetter, A. Geresdi, M. Aagesen, J. Nygård, C. Schönenberger, S. Csonka
DOI 10.1103/PhysRevLett.104.246804 · Physical Review Letters
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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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ti/Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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