Nonreciprocal supercurrent in thin film of type II superconducting Sn
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2023-03-29 |
| Journal | Applied Physics Express |
| Authors | M. Ohkuma, Ryo Matsumoto, Yoshihiko Takano |
| Institutions | National Institute for Materials Science |
| Citations | 2 |
Abstract
Section titled âAbstractâAbstract The nonreciprocal supercurrent, namely the superconducting diode effect, can be realized with various mechanisms. The recent study has demonstrated the superconducting diode effect on thin films under the out-of-plane magnetic field, owing to the asymmetric Bean-Livingston barrier on the edge. In this study, we investigated the nonreciprocal supercurrent in a thin film of Sn deposited on a diamond substrate. The Ginzburg-Landau parameter Îș in the thin film was estimated to be 0.711 which is slightly higher than <mml:math xmlns:mml=âhttp://www.w3.org/1998/Math/MathMLâ overflow=âscrollâ> <mml:mn>1</mml:mn> <mml:mrow> <mml:mo stretchy=âtrueâ>/</mml:mo> </mml:mrow> <mml:msqrt> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msqrt> </mml:math> (0.707). We observed the nonreciprocal supercurrent owing to the asymmetric energy barrier for flux penetration on the edge.