Work

Intrinsic superconducting diode effect and nonreciprocal superconductivity in rhombohedral graphene multilayers

Year: 2025

Type: article

Abstract: Recent experiments found superconductivity in a four-layer graphene stack where electrons pair chirally in a single momentum-space valley. This spin- and valley-polarized pairing challenges conventional theory and suggests new superconducting orders. Here, the authors present a microscopic explanation for the emergence of such pairing. They show that the same broken symmetries produce an intrinsic superconducting diode effect with direction-dependent critical current. This nonreciprocity is inherent to the graphene stack, requiring no magnetic field. It offers a new platform for field-free, nonreciprocal superconducting transport.

Source: Physical review. B./Physical review. B

Authors: Yinqi Chen, Mathias S. Scheurer, Constantin Schrade

Institutions: Louisiana State University, University of Stuttgart

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Louisiana Board of Regents

OpenAlex ID: W4413341690

FWCI: 3.453

Cites: 60

Cited by: 11

Related to: 10