Giant spontaneous Hall effect in zero-moment Mn2RuxGa

Naganivetha Thiyagarajah, Yong Chang Lau, Davide Betto, Kiril Borisov, J. M.D. Coey, Plamen Stamenov, Karsten Rode

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Spin-dependent transport properties of Mn2RuxGa thin-films are studied as function of the Ru concentration and the substrate-induced strain. The large spontaneous Hall angle of 7.7% twenty times bigger than in other 3d metals is a signature of its half-metallicity. The compensation temperature where the magnetization of the two inequivalent antiferromagnetically coupled Mn sublattices cancel can be tuned by varying x or the biaxial strain. This zero-moment half metal is free from demagnetizing forces and creates no stray field, effectively removing two obstacles to integrating magnetic elements in densely packed, nanometer-scale memory elements, and millimeter-wave generators.

Original languageEnglish
Article number122402
JournalApplied Physics Letters
Volume106
Issue number12
DOIs
Publication statusPublished - 2015 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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