Work

Synthetic altermagnets

Year: 2025

Type: article

Abstract: Altermagnets, a distinct class of antiferromagnets with electronic structures resembling those of $d$-wave superconductors, exhibit intriguing properties that have gained significant attention in recent research. In this paper, we propose synthetic altermagnets, composed of two anisotropic ferromagnetic layers arranged such that the total net magnetization is zero. We investigate the properties of these synthetic altermagnets, focusing on their electronic band structures, spin current, Berry curvature, and anomalous Hall conductivity. By developing a minimal model for our synthetic altermagnets, we examine the influence of factors such as anisotropic coupling strengths and spin-orbit coupling on the physical phenomena altermagnets manifest. Our findings open a another path for the realization of altermagnetic materials experimentally and highlight their potential applications in magnetoelectronics, magneto-optics, and spintronics devices.

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

DOI: 10.1103/physrevb.111.094412

Authors: Ali Asgharpour, Bert Koopmans, Rembert A. Duine

Institutions: Utrecht University, Eindhoven University of Technology

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Ministerie van Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor Wetenschappelijk Onderzoek

Awards: G4665694996, Fluid Spintronics