Signature of Carrier-Induced Ferromagnetism in Ti_{1-x}Co_{x}O_{2-delta}: Exchange Interaction Between High-Spin Co 2+ and the Ti 3d Conduction Band

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dc.creatorQuilty, J. W.
dc.creatorShibata, A.
dc.creatorSon, J. -Y.
dc.creatorTakubo, K.
dc.creatorMizokawa, T.
dc.creatorToyosaki, H.
dc.creatorFukumura, T.
dc.creatorKawasaki, M.
dc.date2005-07-08
dc.date2006-01-10
dc.date.accessioned2026-07-07T06:41:17Z
dc.date.available2026-07-07T06:41:17Z
dc.descriptionX-ray photoemission spectroscopy measurements were performed on thin-film samples of rutile Ti_{1-x}Co_{x}O_{2-delta} to reveal the electronic structure. The Co 2p core level spectra indicate that the Co ions take the high-spin Co 2+ configuration, consistent with substitution on the Ti site. The high spin state and the shift due to the exchange splitting of the conduction band suggest strong hybridization between carriers in the Ti 3d t2g band and the t2g states of the high-spin Co 2+. These observations support the argument that room temperature ferromagnetism in Ti_{1-x}Co_{x}O_{2-delta} is intrinsic.
dc.description4 pages, 5 figures. Accepted for publication in Physical Review Letters
dc.identifierhttps://arxiv.org/abs/cond-mat/0507193
dc.identifierhttp://arxiv.org/abs/cond-mat/0507193
dc.identifierPhys. Rev. Lett. 96, 027202 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.027202
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/101619
dc.subjectStrongly Correlated Electrons
dc.titleSignature of Carrier-Induced Ferromagnetism in Ti_{1-x}Co_{x}O_{2-delta}: Exchange Interaction Between High-Spin Co 2+ and the Ti 3d Conduction Band
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