First-principles investigation of the very large perpendicular magnetic anisotropy at Fe | MgO and Co | MgO interfaces

Handle URI:
http://hdl.handle.net/10754/553019
Title:
First-principles investigation of the very large perpendicular magnetic anisotropy at Fe | MgO and Co | MgO interfaces
Authors:
Yang, H. X.; Chshiev, M.; Dieny, B.; Lee, J. H.; Manchon, Aurelien ( 0000-0002-4768-293X ) ; Shin, K. H.
Abstract:
The perpendicular magnetic anisotropy (PMA) arising at the interface between ferromagnetic transition metals and metallic oxides was investigated via first-principles calculations. In this work very large values of PMA, up to 3 erg/cm2, at Fe|MgO interfaces are reported, in agreement with recent experiments. The origin of PMA is attributed to overlap between O-pz and transition metal dz2 orbitals hybridized with dxz(yz) orbitals with stronger spin-orbit coupling-induced splitting around the Fermi level for perpendicular magnetization orientation. Furthermore, it is shown that the PMA value weakens in the case of over- or underoxidation due to the fact that oxygen pz and transition metal dz2 orbital overlap is strongly affected by disorder, in agreement with experimental observations in magnetic tunnel junctions.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
First-principles investigation of the very large perpendicular magnetic anisotropy at Fe | MgO and Co | MgO interfaces 2011, 84 (5) Physical Review B
Publisher:
American Physical Society (APS)
Journal:
Physical Review B
Issue Date:
1-Aug-2011
DOI:
10.1103/PhysRevB.84.054401
ARXIV:
arXiv:1011.5667
Type:
Article
ISSN:
1098-0121; 1550-235X
Additional Links:
http://link.aps.org/doi/10.1103/PhysRevB.84.054401; http://arxiv.org/abs/1011.5667
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorYang, H. X.en
dc.contributor.authorChshiev, M.en
dc.contributor.authorDieny, B.en
dc.contributor.authorLee, J. H.en
dc.contributor.authorManchon, Aurelienen
dc.contributor.authorShin, K. H.en
dc.date.accessioned2015-05-17T20:43:39Zen
dc.date.available2015-05-17T20:43:39Zen
dc.date.issued2011-08-01en
dc.identifier.citationFirst-principles investigation of the very large perpendicular magnetic anisotropy at Fe | MgO and Co | MgO interfaces 2011, 84 (5) Physical Review Ben
dc.identifier.issn1098-0121en
dc.identifier.issn1550-235Xen
dc.identifier.doi10.1103/PhysRevB.84.054401en
dc.identifier.urihttp://hdl.handle.net/10754/553019en
dc.description.abstractThe perpendicular magnetic anisotropy (PMA) arising at the interface between ferromagnetic transition metals and metallic oxides was investigated via first-principles calculations. In this work very large values of PMA, up to 3 erg/cm2, at Fe|MgO interfaces are reported, in agreement with recent experiments. The origin of PMA is attributed to overlap between O-pz and transition metal dz2 orbitals hybridized with dxz(yz) orbitals with stronger spin-orbit coupling-induced splitting around the Fermi level for perpendicular magnetization orientation. Furthermore, it is shown that the PMA value weakens in the case of over- or underoxidation due to the fact that oxygen pz and transition metal dz2 orbital overlap is strongly affected by disorder, in agreement with experimental observations in magnetic tunnel junctions.en
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevB.84.054401en
dc.relation.urlhttp://arxiv.org/abs/1011.5667en
dc.rightsArchived with thanks to Physical Review Ben
dc.titleFirst-principles investigation of the very large perpendicular magnetic anisotropy at Fe | MgO and Co | MgO interfacesen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalPhysical Review Ben
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionSPINTEC, UMR CEA/CNRS/UJF-Grenoble 1/Grenoble-INP, INAC, Grenoble, F-38054, Franceen
dc.contributor.institutionKorea Institute of Science and Technology, Seoul 136-791, Koreaen
dc.identifier.arxividarXiv:1011.5667en
kaust.authorManchon, Aurelienen
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