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dc.contributor.authorSANVITO, STEFANOen
dc.contributor.authorCAFFREY, NUALAen
dc.date.accessioned2013-07-11T08:38:54Z
dc.date.available2013-07-11T08:38:54Z
dc.date.issued2013en
dc.date.submitted2013en
dc.identifier.citationNuala M. Caffrey, Daniel Fritsch, Thomas Archer, Stefano Sanvito and Claude Ederer, Spin-filtering efficiency of ferrimagnetic spinels CoFe2O4 and NiFe2O4, Physical Review B, 87, 2, 2013, 024419-en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/66700
dc.descriptionPUBLISHEDen
dc.description.abstractWe assess the potential of the ferrimagnetic spinel ferrites CoFe 2 O 4 and NiFe 2 O 4 to act as spin filtering barriers in magnetic tunnel junctions. Our study is based on the electronic structure calculated by means of first-principles density functional theory within different approximations for the exchange correlation energy. We show that, in agreement with previous calculations, the density of states suggests a lower tunneling barrier for minority spin electrons, and thus a negative spin-filter effect. However, a more detailed analysis based on the complex band structure reveals that both signs for the spin-filtering efficiency are possible, depending on the band alignment between the electrode and the barrier materials and depending on the specific wave-function symmetry of the relevant bands within the electrodeen
dc.description.sponsorshipThis work has been supported by Science Foundation Ireland under (Grants SFI-07/YI2/I1051 and 07/IN.1/I945) and by the EU-FP7 (iFOX project). We made use of com- putational facilities provided by the Trinity Centre for High Performance Computing (TCHPC) and the Irish Centre for High-End Computing (ICHEC)en
dc.format.extent024419en
dc.language.isoenen
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseries87en
dc.relation.ispartofseries2en
dc.rightsYen
dc.subjectexchange correlationen
dc.subject.lcshexchange correlationen
dc.titleSpin-filtering efficiency of ferrimagnetic spinels CoFe2O4 and NiFe2O4en
dc.typeJournal Articleen
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.contributor.sponsorEuropean Union (EU)en
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/sanvitosen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/mccaffnen
dc.identifier.rssinternalid84403en
dc.identifier.doihttp//10.1103/PhysRevB.87.024419en
dc.relation.ecprojectidinfo:eu-repo/grantAgreement/EC/FP7/G20267
dc.rights.ecaccessrightsOpenAccess
dc.contributor.sponsorGrantNumberG20267en
dc.contributor.sponsorGrantNumberE12375en
dc.subject.TCDThemeNanoscience & Materialsen
dc.identifier.rssurihttp://link.aps.org/doi/10.1103/PhysRevB.87.024419en
dc.identifier.orcid_id0000-0002-1203-0077en


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