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

Davide Betto; Karsten Rode; Naganivetha Thiyagarajah; Yong Chang Lau; Kiril Borisov; Gwenael Atcheson; Mario Ic; Thomas Archer; Plamen Stamenov; J. M.D. Coey

doi:10.1063/1.4943756

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

Davide Betto, Karsten Rode, Naganivetha Thiyagarajah, Yong Chang Lau, Kiril Borisov, Gwenael Atcheson, Mario Ic, Thomas Archer, Plamen Stamenov, J. M.D. Coey

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

The Heusler compound Mn₂Ru_xGa (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.

Original language	English
Article number	055601
Journal	AIP Advances
Volume	6
Issue number	5
DOIs	https://doi.org/10.1063/1.4943756
Publication status	Published - 2016 May 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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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.",

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AU - Betto, Davide

AU - Rode, Karsten

AU - Thiyagarajah, Naganivetha

AU - Lau, Yong Chang

AU - Borisov, Kiril

AU - Atcheson, Gwenael

AU - Ic, Mario

AU - Archer, Thomas

AU - Stamenov, Plamen

AU - Coey, J. M.D.

PY - 2016/5/1

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AB - 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.

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

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