Ab initio giant magnetoresistance and current-induced torques in Cr Au Cr multilayers

P. M. Haney; D. Waldron; R. A. Duine; A. S. Núñez; H. Guo; A. H. MacDonald

doi:10.1103/PhysRevB.75.174428

Ab initio giant magnetoresistance and current-induced torques in Cr Au Cr multilayers

P. M. Haney, D. Waldron, R. A. Duine, A. S. Núñez, H. Guo, A. H. MacDonald

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Abstract

We report on an ab initio study of giant magnetoresistance (GMR) and current-induced torques (CITs) in Cr Au Cr trilayers that is based on nonequilibrium Green's functions and spin-density functional theory. We find substantial GMR due primarily to a spin-dependent resonance centered at the Cr Au interface and predict that the CITs are strong enough to switch the antiferromagnetic order parameter at current densities ∼100 times smaller than switching current densities in ferromagnetic metal circuits. © 2007 The American Physical Society.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	75
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.75.174428
Publication status	Published - 21 May 2007

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10.1103/PhysRevB.75.174428

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abstract = "We report on an ab initio study of giant magnetoresistance (GMR) and current-induced torques (CITs) in Cr Au Cr trilayers that is based on nonequilibrium Green's functions and spin-density functional theory. We find substantial GMR due primarily to a spin-dependent resonance centered at the Cr Au interface and predict that the CITs are strong enough to switch the antiferromagnetic order parameter at current densities ∼100 times smaller than switching current densities in ferromagnetic metal circuits. {\textcopyright} 2007 The American Physical Society.",

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AU - Haney, P. M.

AU - Waldron, D.

AU - Duine, R. A.

AU - Núñez, A. S.

AU - Guo, H.

AU - MacDonald, A. H.

PY - 2007/5/21

Y1 - 2007/5/21

N2 - We report on an ab initio study of giant magnetoresistance (GMR) and current-induced torques (CITs) in Cr Au Cr trilayers that is based on nonequilibrium Green's functions and spin-density functional theory. We find substantial GMR due primarily to a spin-dependent resonance centered at the Cr Au interface and predict that the CITs are strong enough to switch the antiferromagnetic order parameter at current densities ∼100 times smaller than switching current densities in ferromagnetic metal circuits. © 2007 The American Physical Society.

AB - We report on an ab initio study of giant magnetoresistance (GMR) and current-induced torques (CITs) in Cr Au Cr trilayers that is based on nonequilibrium Green's functions and spin-density functional theory. We find substantial GMR due primarily to a spin-dependent resonance centered at the Cr Au interface and predict that the CITs are strong enough to switch the antiferromagnetic order parameter at current densities ∼100 times smaller than switching current densities in ferromagnetic metal circuits. © 2007 The American Physical Society.

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U2 - 10.1103/PhysRevB.75.174428

DO - 10.1103/PhysRevB.75.174428

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

ER -

Ab initio giant magnetoresistance and current-induced torques in Cr Au Cr multilayers

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