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Spin-flip effects on the Andreev bound states and supercurrents in a superconductor/quantum-dot/superconductor system

Hui Pan·Tsung-Han Lin·Dapeng Yu
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Abstract

We investigate the spin-flip effects on the Andreev bound states and the supercurrent in a superconductor/quantum-dot/superconductor system theoretically. The spin-flip scattering in the quantum dot can reverse the supercurrent flowing through the system, and one $π$-junction transition occurs. By controlling the energy level of quantum dot, the supercurrent is reversed back and another $π$-junction transition appears. The different influences of the spin-flip scattering and the intradot energy level on the supercurrent are interpreted in the picture of Andreev bound states.

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Hui Pan, Tsung-Han Lin, Dapeng Yu. 2005-03-27. Spin-flip effects on the Andreev bound states and supercurrents in a superconductor/quantum-dot/superconductor system. https://arxiv.org/abs/cond-mat/0503636

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