Work

Magnon-mediated electric current drag and nonlocal spin-Peltier effect in the ac regime

Year: 2025

Type: article

Abstract: Electron-magnon coupling at the interface between a normal metal and a magnetically ordered insulator modifies the electrical conductivity of the normal metal, an effect known as spin-Hall magnetoresistance. It can also facilitate magnon-mediated electric current drag, the nonlocal electric current response of two normal metal layers separated by a magnetic insulator. Additionally, spin and heat transport are coupled both in the magnetic insulator and across the interfaces to normal metals. In this article, we present a theory of these spintronic and spin-caloritronic effects for time-dependent applied electric fields E ( ω ) , with driving frequencies ω up to the terahertz regime. Our model describes how the dominant transport mechanism, coherent or incoherent magnons, evolves with the driving frequency ω .

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

DOI: 10.1103/zpts-44w3

Authors: Oliver Franke, Duje Akrap, Piet W. Brouwer

Institution: Freie Universität Berlin

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: hybrid

Funder: Deutsche Forschungsgemeinschaft

Awards: TRR 227: Ultraschnelle Spindynamik, G4846862643, G579534092