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Anomalous bias dependence of spin torque in magnetic tunnel junctions

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dc.contributor.author Theodonis, I en
dc.contributor.author Kioussis, N en
dc.contributor.author Kalitsov, A en
dc.contributor.author Chshiev, M en
dc.contributor.author Butler, WH en
dc.date.accessioned 2014-03-01T01:23:37Z
dc.date.available 2014-03-01T01:23:37Z
dc.date.issued 2006 en
dc.identifier.issn 0031-9007 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/17049
dc.subject.classification Physics, Multidisciplinary en
dc.subject.other Antiferromagnetism en
dc.subject.other Ferromagnetism en
dc.subject.other Torque en
dc.subject.other Tunnel junctions en
dc.subject.other Anomalous bias dependence en
dc.subject.other Magnetic tunnels en
dc.subject.other Spin torque en
dc.subject.other Spin transfer en
dc.subject.other Interfaces (materials) en
dc.title Anomalous bias dependence of spin torque in magnetic tunnel junctions en
heal.type journalArticle en
heal.identifier.primary 10.1103/PhysRevLett.97.237205 en
heal.identifier.secondary http://dx.doi.org/10.1103/PhysRevLett.97.237205 en
heal.identifier.secondary 237205 en
heal.language English en
heal.publicationDate 2006 en
heal.abstract We predict an anomalous bias dependence of the spin transfer torque parallel to the interface, T∥, in magnetic tunnel junctions, which can be selectively tuned by the exchange splitting. It may exhibit a sign reversal without a corresponding sign reversal of the bias or even a quadratic bias dependence. We demonstrate that the underlying mechanism is the interplay of spin currents for the ferromagnetic (antiferromagnetic) configurations, which vary linearly (quadratically) with bias, respectively, due to the symmetric (asymmetric) nature of the barrier. The spin transfer torque perpendicular to interface exhibits a quadratic bias dependence. © 2006 The American Physical Society. en
heal.publisher AMERICAN PHYSICAL SOC en
heal.journalName Physical Review Letters en
dc.identifier.doi 10.1103/PhysRevLett.97.237205 en
dc.identifier.isi ISI:000242708900061 en
dc.identifier.volume 97 en
dc.identifier.issue 23 en


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