Effect of in-plane magnetic field on the Fraunhofer pattern in Bi<sub>2</sub>Se<sub>3</sub> based Josephson junction.

ORAL

Abstract

We present a study of Josephson junctions based on MBE grown Bi2Se3 thin films contacted to superconducting aluminum electrodes. While past works have already been published on this system, we present new results that highlight the role of spin-orbit coupling on the Josephson current. On the one hand, we present a measurement of the current-phase relationship, which is found to be sinusoidal as expected for conventional Josephson junctions. On the other hand, we present, in this system, the first measurement of the Fraunhofer pattern with an in-plane magnetic field. While the Fraunhofer pattern is symmetric at zero in-plane magnetic field, it becomes asymmetric upon increasing the amplitude of the in-plane magnetic field. Theoretically, this behavior is understood as the consequence of strong spin-orbit coupling and disorder [1], a behavior that has also been observed recently with the semiconductor InAs [2].

[1] Asbjørn Rasmussen, Jeroen Danon, Henri Suominen, Fabrizio Nichele, Morten Kjaergaard, and Karsten Flensberg
Phys. Rev. B 93, 155406
[2] H. J. Suominen, J. Danon, M. Kjaergaard, K. Flensberg, J. Shabani, C. J. Palmstrøm, F. Nichele, and C. M. Marcus
Phys. Rev. B 95, 035307

–

Presenters

  • Alexandre Assouline

    • LPEM, ESPCI Paris, PSL Research University; CNRS; Sorbonne Universités, UPMC University of Paris 6

Authors

  • Alexandre Assouline

    • LPEM, ESPCI Paris, PSL Research University; CNRS; Sorbonne Universités, UPMC University of Paris 6

  • Cheryl FEUILLET-PALMA

    • LPEM, ESPCI Paris, PSL Research University; CNRS; Sorbonne Universités, UPMC University of Paris 6

  • Tianzhen Zhang

    • LPEM, ESPCI Paris, PSL Research University; CNRS; Sorbonne Universités, UPMC University of Paris 6
    • ESPCI

  • Alexandre Zimmers

    • LPEM, ESPCI Paris, PSL Research University; CNRS; Sorbonne Universités, UPMC University of Paris 6
    • ESPCI

  • Nicolas Bergeal

    • LPEM, ESPCI Paris, PSL Research University; CNRS; Sorbonne Universités, UPMC University of Paris 6
    • ESPCI

  • Paola Atkinson

    • Sorbonne Universités, UPMC, Univ. Paris 06, CNRS, UMR 7588, Institut des NanoSciences de Paris

  • Mahmoud Eddrief

    • Sorbonne Universités, UPMC, Univ. Paris 06, CNRS, UMR 7588, Institut des NanoSciences de Paris

  • Massimiliano Marangolo

    • Sorbonne Universités, UPMC, Univ. Paris 06, CNRS, UMR 7588, Institut des NanoSciences de Paris

  • Marko KUZMANOVIC

    • Laboratoire de Physique des Solides, CNRS, Université Paris-Sud, University Paris-Saclay

  • Marco Aprili

    • Laboratoire de Physique des Solides, CNRS, Université Paris-Sud, University Paris-Saclay

  • Herve Aubin

    • LPEM, ESPCI Paris, PSL Research University; CNRS; Sorbonne Universités, UPMC University of Paris 6
    • ESPCI