Josephson Diode Effect in Helimagnetic CrNb<sub>3</sub>S<sub>6</sub>

ORAL

Abstract

Cr1/3NbS2 is a helimagnetic transition metal dichalcogenide, meaning it has broken inversion symmetry and time reversal symmetry. We explore the magnetic diffraction patterns of Josehpson junctions fabricated from Cr1/3NbS2, and find that there is a zero-field Josehpson diode effect, as well as highly asymmetric responses to field in the patterns. We also propose two explanations for these observations, one based on the emergence of vortices from stray magnetic fields, and one based on non-zero spin chirality from stray magnetic fields.

**A.B. was supported as part of the DOE "Quantum Sensing and Quantum Materials' Energy Frontier Research Center under grant DE-SC0021238. The experiment was carried out in part in the Materials Research Laboratory Central Research Facilities, University of Illinois, and using facilities of the Illinois MRSEC, supported by NSF DMR-1720633.

–

Presenters

  • Alexander Richard Beach

    • University of Illinois at Urbana-Champaign

Authors

  • Alexander Richard Beach

    • University of Illinois at Urbana-Champaign

  • Nadya Mason

    • University of Chicago

  • Gregory MacDougall

    • University of Illinois

  • Matthew J Gilbert

    • University of Illinois at Urbana-Champaign

  • Younghyuk Kim

    • University of Illinois at Urbana-Champaign

  • Mostafa T Ahari

    • University of Illinois, Urbana-Champaign
    • University of Illinois Urbana-Champaign