Dissemin is shutting down on January 1st, 2025

Published in

American Physical Society, Physical Review Letters, 5(113), 2014

DOI: 10.1103/physrevlett.113.057601

Links

Tools

Export citation

Search in Google Scholar

Spin pumping and spin-transfer torques in antiferromagnets

Journal article published in 2014 by Ran Cheng ORCID, Jiang Xiao, Qian Niu, Arne Brataas ORCID
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Green circle
Postprint: archiving allowed
Green circle
Published version: archiving allowed
Data provided by SHERPA/RoMEO

Abstract

Spin pumping and spin-transfer torques are two reciprocal phenomena widely studied in ferromagnetic materials. However, pumping from antiferromagnets and its relation to current-induced torques have not been explored. By calculating how electrons scatter off a normal metal-antiferromagnetic interface, we derive pumped spin and staggered spin currents in terms of the staggered field, the magnetization, and their rates of change. For both compensated and uncompensated interfaces, spin pumping is of a similar magnitude as in ferromagnets with a direction controlled by the polarization of the driving microwave. The pumped currents are connected to current-induced torques via Onsager reciprocity relations. ; Comment: 5 pages, 4 figures