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dc.contributor.authorCOEY, JOHN MICHAEL DAVID
dc.date.accessioned2009-08-14T09:15:54Z
dc.date.available2009-08-14T09:15:54Z
dc.date.issued1999
dc.date.submitted1999en
dc.identifier.citationE.J. Singley, C.P. Weber, D.N. Basov, A. Barry and J.M.D. Coey 'Charge dynamics in the half-metallic ferromagnet CrO2' in Physical Review B, 60, (6), 1999, pp 4126 - 4130en
dc.identifier.otherYen
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/31767
dc.descriptionPUBLISHEDen
dc.description.abstractInfrared spectroscopy is used to investigate the electronic structure and charge carrier relaxation in crystalline films of CrO2 which is the simplest of all half-metallic ferromagnets. Chromium dioxide is a bad metal at room temperature but it has a remarkably low residual resistivity (<5???cm) despite the small spectral weight associated with free carrier absorption. The infrared measurements show that low residual resistivity is due to the collapse of the scattering rate at ?<2000?cm-1. The blocking of the relaxation channels at low ? and T can be attributed to the unique electronic structure of a half-metallic ferromagnet. In contrast to other ferromagnetic oxides, the intraband spectral weight is constant below the Curie temperature.en
dc.description.sponsorshipThe authors would like to thank P. B. Allen, A. Bratkowski, J. E. Hirsch, and I. I. Mazin for many useful comments. This work was supported by the NSF Grant No. DMR-9875980, the Alfred P. Sloan Foundation, a subcontract from Brookhaven National Laboratory, and a grant from Research Corporation. D.N.B. received funding from the Research Corporation.en
dc.format.extent4126en
dc.format.extent4130en
dc.format.extent79224 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseries60en
dc.relation.ispartofseries6en
dc.rightsYen
dc.subjectPhysicsen
dc.titleCharge dynamics in the half-metallic ferromagnet CrO2en
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jcoey
dc.identifier.rssinternalid3840


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