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Abstract: Ferromagnetic proximity effect is studied in InAs nanowire NW based quantumdots QD strongly coupled to a ferromagnetic F and a superconducting Slead. The influence of the F lead is detected through the splitting of thespin-1-2 Kondo resonance. We show that the F lead induces a local exchangefield on the QD, which has varying amplitude and a sign depending on the chargestates. The interplay of the F and S correlations generates an exchange fieldrelated supgap feature. This novel mini-gap allows now the visualization of theexchange field also in even charge states



Autor: L. Hofstetter, S. Csonka, A. Geresdi, M. Aagesen, J. Nygard, C. Schonenberger

Fuente: https://arxiv.org/



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