Work

Zero-field finite-momentum and field-induced superconductivity in altermagnets

Year: 2024

Type: article

Abstract: We explore the possibilities for spin-singlet superconductivity in newly discovered altermagnets. Investigating d -wave altermagnets, we show that finite-momentum superconductivity can easily emerge in altermagnets even though they have no net magnetization, when the superconducting order parameter also has d -wave symmetry with nodes coinciding with the altermagnet nodes. Additionally, we find a rich phase diagram when both altermagnetism and an external magnetic field are considered, including superconductivity appearing at high magnetic fields from a parent zero-field normal state. Published by the American Physical Society 2024

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

DOI: 10.1103/physrevb.110.l060508

Authors: Debmalya Chakraborty, Annica M. Black-Schaffer

Institution: Uppsala University

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, Uppsala Multidisciplinary Center for Advanced Computational Science