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The zero-moment half metal: How could it change spin electronics?

Authors :
Davide Betto
Karsten Rode
Naganivetha Thiyagarajah
Yong-Chang Lau
Kiril Borisov
Gwenael Atcheson
Mario Žic
Thomas Archer
Plamen Stamenov
J. M. D. Coey
Source :
AIP Advances, Vol 6, Iss 5, Pp 055601-055601-9 (2016)
Publication Year :
2016
Publisher :
AIP Publishing LLC, 2016.

Abstract

The Heusler compound Mn2RuxGa (MRG) may well be the first compensated half metal. Here, the structural, magnetic and transport properties of thin films of MRG are discussed. There is evidence of half-metallicity up to x = 0.7, and compensation of the two Mn sublattice moments is observed at specific compositions and temperatures, leading to a zero-moment half metal. There are potential benefits for using such films with perpendicular anisotropy for spin-torque magnetic tunnel junctions and oscillators, such as low critical current, high tunnel magnetoresistance ratio, insensitivity to external fields and resonance frequency in the THz range.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
21583226
Volume :
6
Issue :
5
Database :
Directory of Open Access Journals
Journal :
AIP Advances
Publication Type :
Academic Journal
Accession number :
edsdoj.f7c5828af124dd8ba914962fda0726e
Document Type :
article
Full Text :
https://doi.org/10.1063/1.4943756