Spin-state transition in LaCoO3: direct neutron spectroscopic evidence of excited magnetic states

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dc.creatorPodlesnyak, A.
dc.creatorStreule, S.
dc.creatorMesot, J.
dc.creatorMedarde, M.
dc.creatorPomjakushina, E.
dc.creatorConder, K.
dc.creatorHaverkort, M. W.
dc.creatorKhomskii, D. I.
dc.date2005-05-13
dc.date2005-05-14
dc.date.accessioned2026-07-07T09:22:34Z
dc.date.available2026-07-07T09:22:34Z
dc.descriptionA gradual spin-state transition occurs in LaCoO3 around T~80-120 K, whose detailed nature remains controversial. We studied this transition by means of inelastic neutron scattering (INS), and found that with increasing temperature an excitation at ~0.6 meV appears, whose intensity increases with temperature, following the bulk magnetization. Within a model including crystal field interaction and spin-orbit coupling we interpret this excitation as originating from a transition between thermally excited states located about 120 K above the ground state. We further discuss the nature of the magnetic excited state in terms of intermediate-spin (IS, S=1) vs. high-spin (HS, S=2) states. Since the g-factor obtained from the field dependence of the INS is g~3, the second interpretation looks more plausible.
dc.description10 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0505344
dc.identifierhttp://arxiv.org/abs/cond-mat/0505344
dc.identifierPhys. Rev. Lett. 97, 247208 (2006)
dc.identifierdoi:10.1103/PhysRevLett.97.247208
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/155418
dc.subjectStrongly Correlated Electrons
dc.titleSpin-state transition in LaCoO3: direct neutron spectroscopic evidence of excited magnetic states
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