Origin of ferromagnetism in (Zn,Co)O from magnetization and spin-dependent magnetoresistance

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dc.creatorDietl, T.
dc.creatorAndrearczyk, T.
dc.creatorLipińska, A.
dc.creatorKiecana, M.
dc.creatorTay, Maureen
dc.creatorWu, Yihong
dc.date2007-08-20
dc.date2007-09-11
dc.date.accessioned2026-07-07T12:05:22Z
dc.date.available2026-07-07T12:05:22Z
dc.descriptionIn order to elucidate the nature of ferromagnetic signatures observed in (Zn,Co)O we have examined experimentally and theoretically magnetic properties and spin-dependent quantum localization effects that control low-temperature magnetoresistance. Our findings, together with a through structural characterization, substantiate the model assigning spontaneous magnetization of (Zn,Co)O to uncompensated spins at the surface of antiferromagnetic nanocrystal of Co-rich wurtzite (Zn,Co)O. The model explains a large anisotropy observed in both magnetization and magnetoresistance in terms of spin hamiltonian of Co ions in the crystal field of the wurtzite lattice.
dc.description6 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0708.2476
dc.identifierhttp://arxiv.org/abs/0708.2476
dc.identifierPhys. Rev. B 76, 155312 (2007) (5 pages)
dc.identifierdoi:10.1103/PhysRevB.76.155312
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/208356
dc.subjectMaterials Science
dc.titleOrigin of ferromagnetism in (Zn,Co)O from magnetization and spin-dependent magnetoresistance
dc.typetext

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