Work

Quantum geometry and magnon Hall transport in an altermagnet

Year: 2025

Type: article

Abstract: The authors derive here an analytic expression for the relevant quantum geometric tensor in systems described by two-band bosonic Bogoliubov Hamiltonians. They apply it to compute magnon Hall conductivities in a two-dimensional altermagnet model. Both the magnon thermal Hall and spin Nernst conductivities are shown to depend directly on the altermagnetic parameter, offering a potential experimental signature of altermagnetism in this setting.

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

DOI: 10.1103/krk8-655j

Authors: Erlend Syljuåsen, Alireza Qaiumzadeh, Asle Sudbø

Institution: Norwegian University of Science and 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

Funder: Norges Forskningsråd

Award: G2165927803