Work

Electric and spin current vortices in altermagnets

Year: 2025

Type: article

Abstract: Altermagnets are collinear magnets exhibiting momentum-dependent spin splitting and vanishing net magnetization. Using semiclassical Boltzmann and lattice Keldysh approaches, the authors demonstrate here that altermagnets support swirling electric and spin currents. The patterns of these currents are controlled by the relative orientation of altermagnetic nodal planes and sample boundaries. Unlike previous proposals considering the hydrodynamic transport regime, swirling currents appear even in the Ohmic regime and rely exclusively on altermagnetic spin splitting, with no swirls found in ferromagnets.

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

DOI: 10.1103/3sw6-y8vf

Authors: Arsen Herasymchuk, Karl Bergson Hallberg, Erik Wegner Hodt, Jacob Linder, E. V. Gorbar, Pavlo Sukhachov

Institutions: Bogolyubov Institute for Theoretical Physics, Norwegian University of Science and Technology, Taras Shevchenko National University of Kyiv, University of Missouri

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

Funder: Norges Forskningsråd

Awards: G2165927803, G334869164, G3723448086