Details

Autor(en) / Beteiligte

• Nichele, F.
• Portolés, E.
• Fornieri, A.
• Whiticar, A. M.
• Drachmann, A. C. C.
• Gronin, S.
• Wang, T.
• Gardner, G. C.
• Thomas, C.
• Hatke, A. T.
• Manfra, M. J.
• Marcus, C. M.

Titel

Relating Andreev Bound States and Supercurrents in Hybrid Josephson Junctions

Ist Teil von

• Physical review letters, 2020-06, Vol.124 (22), p.1-226801, Article 226801

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2020

Quelle

American Physical Society

Beschreibungen/Notizen

• We demonstrate concomitant measurement of phase-dependent critical current and Andreev bound state spectrum in a highly transmissive InAs Josephson junction embedded in a dc superconducting quantum interference device (SQUID). Tunneling spectroscopy reveals Andreev bound states with near unity transmission probability. A nonsinusoidal current-phase relation is derived from the Andreev spectrum, showing excellent agreement with the one extracted from the SQUID critical current. Both measurements are reconciled within a short junction model where multiple Andreev bound states, with various transmission probabilities, contribute to the entire supercurrent flowing in the junction.