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

Journal Article · Sun May 15 00:00:00 EDT 2016 · AIP Advances

DOI:https://doi.org/10.1063/1.4943756· OSTI ID:22611453

Betto, Davide; Rode, Karsten; Thiyagarajah, Naganivetha; Lau, Yong-Chang; Borisov, Kiril; Atcheson, Gwenael; Stamenov, Plamen; Coey, J. M. D. ^[1]; Žic, Mario; Archer, Thomas ^[2]

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1. CRANN, AMBER and School of Physics, Trinity College Dublin, Dublin 2 (Ireland)
2. CRANN, and School of Physics, Trinity College Dublin, Dublin 2 (Ireland)

The Heusler compound Mn{sub 2}Ru{sub x}Ga (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.

• OSTI ID: 22611453
• Journal Information: AIP Advances, Vol. 6, Issue 5; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
CRITICAL CURRENT
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
GALLIUM COMPOUNDS
HEUSLER ALLOYS
MAGNETIC PROPERTIES
MAGNETIC TUNNEL JUNCTIONS
MAGNETORESISTANCE
MANGANESE COMPOUNDS
METALLICITY
METALS
OSCILLATORS
RESONANCE
RUTHENIUM COMPOUNDS
SPIN
TERNARY ALLOY SYSTEMS
THIN FILMS
THZ RANGE
TUNNEL EFFECT