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arXiv · 2101.09706

Zeeman-driven parity transitions in an Andreev quantum dot

A. M. Whiticar·A. Fornieri·A. Banerjee·A. C. C. Drachmann·S. Gronin·G. C. Gardner·T. Lindemann·M. J. Manfra·C. M. Marcus
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Abstract

The Andreev spectrum of a quantum dot embedded in a hybrid semiconductor-superconductor interferometer can be modulated by electrostatic gating, magnetic flux through the interferometer, and Zeeman splitting from in-plane magnetic field. We demonstrate parity transitions in the embedded quantum dot system, and show that the Zeeman-driven transition is accompanied by a 0-{\pi} transition in the superconducting phase across the dot. We further demonstrate that flux through the interferometer modulates both dot parity and 0-{\pi} transitions.

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A. M. Whiticar, A. Fornieri, A. Banerjee, A. C. C. Drachmann, S. Gronin, G. C. Gardner, T. Lindemann, M. J. Manfra, C. M. Marcus. 2021-01-24. Zeeman-driven parity transitions in an Andreev quantum dot. https://doi.org/10.1103/physrevb.103.245308

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