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Phase coherent transport in Kondo/superconducting hybrid structures

Jonghwa Eom·Yun-Sok Shin·Hu-Jong Lee·Wang-Hyun Park·Taegon Kim·Jonghan Song
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Abstract

We present measurements of the transport properties of hybrid structures consisting of a Kondo AuFe film and a superconducting Al film. The temperature dependence of the resistance indicates the existence of the superconducting proximity effect in the Kondo AuFe wires over the range of $\sim0.5$ $μ$m. Electronic phase coherence in the Kondo AuFe wires has been confirmed by observing the Aharanov-Bohm effect in the magnetoresistance of the loop structure. The amplitude of the magnetoresistance oscillations shows a reentrant behavior with a maximum at $\sim$ 870 mK, which results from an interplay between the Kondo effect and the superconducting proximity effect.

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Jonghwa Eom, Yun-Sok Shin, Hu-Jong Lee, Wang-Hyun Park, Taegon Kim, Jonghan Song. 2003-09-26. Phase coherent transport in Kondo/superconducting hybrid structures. https://arxiv.org/abs/cond-mat/0309598

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