Signatures of asymmetric and inelastic tunneling on the spin torque bias dependence

Handle URI:
http://hdl.handle.net/10754/554127
Title:
Signatures of asymmetric and inelastic tunneling on the spin torque bias dependence
Authors:
Manchon, Aurelien ( 0000-0002-4768-293X ) ; Zhang, S.; Lee, K.-J.
Abstract:
The influence of structural asymmetries (barrier height and exchange splitting), as well as inelastic scattering (magnons and phonons) on the bias dependence of the spin transfer torque in a magnetic tunnel junction is studied theoretically using the free-electron model. We show that they modify the “conventional” bias dependence of the spin transfer torque, together with the bias dependence of the conductance. In particular, both structural asymmetries and bulk (inelastic) scattering add antisymmetric terms to the perpendicular torque (∝V and ∝je|V|) while the interfacial inelastic scattering conserves the junction symmetry and only produces symmetric terms (∝|V|n, n∊N). The analysis of spin torque and conductance measurements displays a signature revealing the origin (asymmetry or inelastic scattering) of the discrepancy.
KAUST Department:
Materials Science and Engineering Program; Physical Sciences and Engineering (PSE) Division
Citation:
Signatures of asymmetric and inelastic tunneling on the spin torque bias dependence 2010, 82 (17) Physical Review B
Journal:
Physical Review B
Issue Date:
15-Nov-2010
DOI:
10.1103/PhysRevB.82.174420
ARXIV:
arXiv:1110.3492
Type:
Article
ISSN:
1098-0121; 1550-235X
Additional Links:
http://link.aps.org/doi/10.1103/PhysRevB.82.174420; http://arxiv.org/abs/1110.3492
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorManchon, Aurelienen
dc.contributor.authorZhang, S.en
dc.contributor.authorLee, K.-J.en
dc.date.accessioned2015-05-18T21:58:15Zen
dc.date.available2015-05-18T21:58:15Zen
dc.date.issued2010-11-15en
dc.identifier.citationSignatures of asymmetric and inelastic tunneling on the spin torque bias dependence 2010, 82 (17) Physical Review Ben
dc.identifier.issn1098-0121en
dc.identifier.issn1550-235Xen
dc.identifier.doi10.1103/PhysRevB.82.174420en
dc.identifier.urihttp://hdl.handle.net/10754/554127en
dc.description.abstractThe influence of structural asymmetries (barrier height and exchange splitting), as well as inelastic scattering (magnons and phonons) on the bias dependence of the spin transfer torque in a magnetic tunnel junction is studied theoretically using the free-electron model. We show that they modify the “conventional” bias dependence of the spin transfer torque, together with the bias dependence of the conductance. In particular, both structural asymmetries and bulk (inelastic) scattering add antisymmetric terms to the perpendicular torque (∝V and ∝je|V|) while the interfacial inelastic scattering conserves the junction symmetry and only produces symmetric terms (∝|V|n, n∊N). The analysis of spin torque and conductance measurements displays a signature revealing the origin (asymmetry or inelastic scattering) of the discrepancy.en
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevB.82.174420en
dc.relation.urlhttp://arxiv.org/abs/1110.3492en
dc.rightsArchived with thanks to Physical Review Ben
dc.titleSignatures of asymmetric and inelastic tunneling on the spin torque bias dependenceen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalPhysical Review Ben
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Physics, University of Arizona, Tucson, Arizona 85721, USAen
dc.contributor.institutionDepartment of Materials Science and Engineering, Korea University, Seoul 136-713, Koreaen
dc.identifier.arxividarXiv:1110.3492en
kaust.authorManchon, Aurelienen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.