Supercurrent in the presence of direct transmission and a resonant localized state

Autor:	Levajac, Vukan, Barakov, Hristo, Mazur, Grzegorz P., van Loo, Nick, Kouwenhoven, Leo P., Nazarov, Yuli V., Wang, Ji-Yin
Rok vydání:	2023
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Superconductivity
Druh dokumentu:	Working Paper
Popis:	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 $\pi$-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. Comment: arXiv admin note: substantial text overlap with arXiv:2201.07848
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2310.03296 Zobrazit plný text záznamu View this record from Arxiv