Control of Andreev Bound States Using Superconducting Phase Texture

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Control of Andreev Bound States Using Superconducting Phase Texture

Banerjee, Abhishek; Geier, Max; Rahman, M Ahnaf; Sanchez, Daniel S; Thomas, Candice; Wang, Tian; Manfra, Michael J; Flensberg, Karsten; Marcus, Charles M

Physical review letters, 03/2023, Volume: 130, Issue: 11

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Andreev bound states with opposite phase-inversion asymmetries are observed in local tunneling spectra at the two ends of a superconductor-semiconductor-superconductor planar Josephson junction in the presence of a perpendicular magnetic field, while the nonlocal spectra remain phase symmetric. Spectral signatures agree with a theoretical model, yielding a physical picture in which phase textures in superconducting leads localize and control the position of Andreev bound states in the junction, demonstrating a simple means of controlling the position and size of Andreev states within a planar junction.

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