dc.contributor.author | SANVITO, STEFANO | en |
dc.contributor.author | CAFFREY, NUALA | en |
dc.date.accessioned | 2013-07-11T08:38:54Z | |
dc.date.available | 2013-07-11T08:38:54Z | |
dc.date.issued | 2013 | en |
dc.date.submitted | 2013 | en |
dc.identifier.citation | Nuala 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.other | Y | en |
dc.identifier.uri | http://hdl.handle.net/2262/66700 | |
dc.description | PUBLISHED | en |
dc.description.abstract | We 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 electrode | en |
dc.description.sponsorship | This 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.extent | 024419 | en |
dc.language.iso | en | en |
dc.relation.ispartofseries | Physical Review B | en |
dc.relation.ispartofseries | 87 | en |
dc.relation.ispartofseries | 2 | en |
dc.rights | Y | en |
dc.subject | exchange correlation | en |
dc.subject.lcsh | exchange correlation | en |
dc.title | Spin-filtering efficiency of ferrimagnetic spinels CoFe2O4 and NiFe2O4 | en |
dc.type | Journal Article | en |
dc.contributor.sponsor | Science Foundation Ireland (SFI) | en |
dc.contributor.sponsor | European Union (EU) | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/sanvitos | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/mccaffn | en |
dc.identifier.rssinternalid | 84403 | en |
dc.identifier.doi | http//10.1103/PhysRevB.87.024419 | en |
dc.relation.ecprojectid | info:eu-repo/grantAgreement/EC/FP7/G20267 | |
dc.rights.ecaccessrights | OpenAccess | |
dc.contributor.sponsorGrantNumber | G20267 | en |
dc.contributor.sponsorGrantNumber | E12375 | en |
dc.subject.TCDTheme | Nanoscience & Materials | en |
dc.identifier.rssuri | http://link.aps.org/doi/10.1103/PhysRevB.87.024419 | en |
dc.identifier.orcid_id | 0000-0002-1203-0077 | en |