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Current-driven thermo-magnetic switching in magnetic tunnel junctions
KTH, Skolan för teknikvetenskap (SCI), Tillämpad fysik, Nanostrukturfysik. National Academy of Sciences of Ukraine, Ukraine.ORCID-id: 0000-0001-8754-3152
KTH, Skolan för teknikvetenskap (SCI), Tillämpad fysik, Nanostrukturfysik. National Academy of Sciences of Ukraine, Ukraine.
Vise andre og tillknytning
2017 (engelsk)Inngår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 111, nr 26, artikkel-id 262401Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We investigate switching of magnetic tunnel junctions (MTJs) driven by the thermal effect of the transport current through the junctions. The switching occurs in a specially designed composite free layer, which acts as one of the MTJ electrodes, and is due to a current-driven ferro-to-paramagnetic Curie transition with the associated exchange decoupling within the free layer leading to magnetic reversal. We simulate the current and heat propagation through the device and show how heat focusing can be used to improve the power efficiency. The Curie-switch MTJ demonstrated in this work has the advantage of being highly tunable in terms of its operating temperature range, conveniently to or just above room temperature, which can be of technological significance and competitive with the known switching methods using spin-transfer torques.

sted, utgiver, år, opplag, sider
American Institute of Physics (AIP), 2017. Vol. 111, nr 26, artikkel-id 262401
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Identifikatorer
URN: urn:nbn:se:kth:diva-221372DOI: 10.1063/1.5009577ISI: 000418947200019Scopus ID: 2-s2.0-85040075209OAI: oai:DiVA.org:kth-221372DiVA, id: diva2:1175094
Forskningsfinansiär
Swedish Research Council, 2014-4548
Merknad

QC 20180117

Tilgjengelig fra: 2018-01-17 Laget: 2018-01-17 Sist oppdatert: 2018-01-17bibliografisk kontrollert

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Korenivski, Vladislav

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