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dc.contributor.authorMiao, Guoxing
dc.contributor.authorMoodera, Jagadeesh
dc.date.accessioned2012-07-19T19:51:40Z
dc.date.available2012-07-19T19:51:40Z
dc.date.issued2012-04
dc.date.submitted2012-02
dc.identifier.issn1098-0121
dc.identifier.issn1550-235X
dc.identifier.urihttp://hdl.handle.net/1721.1/71710
dc.description.abstractThe chalcogenide compound EuO is best known as a highly efficient spin-filter tunnel barrier material. Using the molecular beam epitaxy method, we combine polycrystalline EuO with epitaxial MgO and construct magnetic tunnel junctions with such hybrid tunnel barriers. Tunnel magnetoresistance of over 40% was achieved in junctions with oxygen-rich EuO. For lower oxygen concentration, magnetoresistance decreases dramatically and eventually vanishes, indicating that spin filtering is weakened when the transport is mainly mediated by excess conduction channels through defect sites.en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (Grant No. DMR 0504158)en_US
dc.description.sponsorshipUnited States. Office of Naval Research (Grant No. N00014- 09-1-0177)en_US
dc.language.isoen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevB.85.144424en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAPSen_US
dc.titleMagnetic tunnel junctions with MgO-EuO composite tunnel barriersen_US
dc.typeArticleen_US
dc.identifier.citationMiao, Guo-Xing, and Jagadeesh S. Moodera. “Magnetic Tunnel Junctions with MgO-EuO Composite Tunnel Barriers.” Physical Review B 85.14 (2012). ©2012 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.departmentFrancis Bitter Magnet Laboratory (Massachusetts Institute of Technology)en_US
dc.contributor.approverMoodera, Jagadeesh
dc.contributor.mitauthorMiao, Guoxing
dc.contributor.mitauthorMoodera, Jagadeesh
dc.relation.journalPhysical Review Ben_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsMiao, Guo-Xing; Moodera, Jagadeesh S.en
dc.identifier.orcidhttps://orcid.org/0000-0002-2480-1211
dspace.mitauthor.errortrue
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


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