Magnetization dynamics of antiferromagnetic metals of PtMn and IrMn driven by a pulsed spin-transfer torque

Kyuhwe Kang, Won Bin Lee, Dong Kyu Lee, Kyung Jin Lee, Gyung Min Choi

Research output: Contribution to journalArticlepeer-review

Abstract

Antiferromagnets are promising materials for memory devices owing to their ultrafast spin dynamics. For efficient control of antiferromagnets, a direct interaction between the spin current and local magnetization of the sublattice is required. In this study, we demonstrated that a short-pulsed spin current can induce fast dynamics of metallic antiferromagnets of PtMn and IrMn via spin-transfer torque on the magnetization of sublattices. We employed two methods to generate a short-pulsed spin current, namely ultrafast demagnetization of a ferromagnet and optical spin polarization of a heavy metal. The magnetization dynamics were measured using the time-resolved magneto-optical Kerr effect and were analyzed using the Landau-Lifshitz-Gilbert equation. Our results provide important evidence of the direct interaction between the magnetization of antiferromagnets and spin current.

Original languageEnglish
Article number252407
JournalApplied Physics Letters
Volume118
Issue number25
DOIs
Publication statusPublished - 2021 Jun 21

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint

Dive into the research topics of 'Magnetization dynamics of antiferromagnetic metals of PtMn and IrMn driven by a pulsed spin-transfer torque'. Together they form a unique fingerprint.

Cite this