Supercurrent in the Presence of Direct Transmission and a Resonant Localized State

Vukan Levajac; Hristo Barakov; Grzegorz P. Mazur; Nick Van Loo; Leo P. Kouwenhoven; Yuli V. Nazarov; Ji Yin Wang

doi:10.1103/PhysRevLett.132.176304

Supercurrent in the Presence of Direct Transmission and a Resonant Localized State

Vukan Levajac, Hristo Barakov, Grzegorz P. Mazur, Nick Van Loo, Leo P. Kouwenhoven, Yuli V. Nazarov^*, Ji Yin Wang^*

^*Corresponding author for this work

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Abstract

We study the current-phase relation (CPR) of an InSb-Al nanowire Josephson junction in parallel magnetic fields up to 700 mT. At high magnetic fields and in narrow voltage intervals of a gate under the junction, the CPR exhibits π shifts. The supercurrent declines within these gate intervals and shows asymmetric gate voltage dependence above and below them. We detect these features sometimes also at zero magnetic field. The observed CPR properties are reproduced by a theoretical model of supercurrent transport via interference between direct transmission and a resonant localized state.

Original language	English
Article number	176304
Journal	Physical review letters
Volume	132
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.132.176304
Publication status	Published - 2024

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title = "Supercurrent in the Presence of Direct Transmission and a Resonant Localized State",

abstract = "We study the current-phase relation (CPR) of an InSb-Al nanowire Josephson junction in parallel magnetic fields up to 700 mT. At high magnetic fields and in narrow voltage intervals of a gate under the junction, the CPR exhibits π shifts. The supercurrent declines within these gate intervals and shows asymmetric gate voltage dependence above and below them. We detect these features sometimes also at zero magnetic field. The observed CPR properties are reproduced by a theoretical model of supercurrent transport via interference between direct transmission and a resonant localized state.",

author = "Vukan Levajac and Hristo Barakov and Mazur, {Grzegorz P.} and {Van Loo}, Nick and Kouwenhoven, {Leo P.} and Nazarov, {Yuli V.} and Wang, {Ji Yin}",

year = "2024",

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T1 - Supercurrent in the Presence of Direct Transmission and a Resonant Localized State

AU - Levajac, Vukan

AU - Barakov, Hristo

AU - Mazur, Grzegorz P.

AU - Van Loo, Nick

AU - Kouwenhoven, Leo P.

AU - Nazarov, Yuli V.

AU - Wang, Ji Yin

PY - 2024

Y1 - 2024

N2 - We study the current-phase relation (CPR) of an InSb-Al nanowire Josephson junction in parallel magnetic fields up to 700 mT. At high magnetic fields and in narrow voltage intervals of a gate under the junction, the CPR exhibits π shifts. The supercurrent declines within these gate intervals and shows asymmetric gate voltage dependence above and below them. We detect these features sometimes also at zero magnetic field. The observed CPR properties are reproduced by a theoretical model of supercurrent transport via interference between direct transmission and a resonant localized state.

AB - We study the current-phase relation (CPR) of an InSb-Al nanowire Josephson junction in parallel magnetic fields up to 700 mT. At high magnetic fields and in narrow voltage intervals of a gate under the junction, the CPR exhibits π shifts. The supercurrent declines within these gate intervals and shows asymmetric gate voltage dependence above and below them. We detect these features sometimes also at zero magnetic field. The observed CPR properties are reproduced by a theoretical model of supercurrent transport via interference between direct transmission and a resonant localized state.

UR - http://www.scopus.com/inward/record.url?scp=85191698908&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.132.176304

DO - 10.1103/PhysRevLett.132.176304

M3 - Article

AN - SCOPUS:85191698908

SN - 0031-9007

VL - 132

JO - Physical review letters

JF - Physical review letters

IS - 17

M1 - 176304

ER -

Supercurrent in the Presence of Direct Transmission and a Resonant Localized State

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