Structural, electronic, and magneto-optical properties of YVO$_3$

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dc.creatorTsvetkov, A. A.
dc.creatorMena, F. P.
dc.creatorvan Loosdrecht, P. H. M.
dc.creatorvan der Marel, D.
dc.creatorRen, Y.
dc.creatorNugroho, A. A.
dc.creatorMenovsky, A. A.
dc.creatorElfimov, I. S.
dc.creatorSawatzky, G. A.
dc.date2003-08-12
dc.date.accessioned2026-07-07T02:52:54Z
dc.date.available2026-07-07T02:52:54Z
dc.descriptionOptical and magneto-optical properties of YVO$_3$ single crystal were studied in FIR, visible, and UV regions. Two structural phase transitions at 75 K and 200 K were observed and established to be of the first and second order, respectively. The lattice has an orthorhombic $Pbnm$ symmetry both above 200 K as well as below 75 K, and is found to be dimerized monoclinic $Pb11$ in between. We identify YVO$_3$ as a Mott-Hubbard insulator with the optical gap of 1.6 eV. The electronic excitations in the visible spectrum are determined by three $d$-bands at 1.8, 2.4, and 3.3 eV, followed by the charge-transfer transitions at about 4 eV. The observed structure is in good agreement with LSDA+$U$ band structure calculations. By using ligand field considerations, we assigned these bands to the transitions to the $^4A_{2g}$, $^2E_{g} + ^2T_{1g}$, and $^2T_{2g}$ states. The strong temperature dependence of these bands is in agreement with the formation of orbital order. Despite the small net magnetic moment of 0.01 $μ_B$ per vanadium, the Kerr effect of the order of $0.01^\circ$ was observed for all three $d$-bands in the magnetically ordered phase $T_{\text{Néel}}<116 K$. A surprisingly strong enhancement of the Kerr effect was found below 75 K, reaching a maximum of $0.1^\circ$. The effect is ascribed to the non-vanishing net orbital magnetic moment.
dc.descriptionSubmitted to Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/cond-mat/0308224
dc.identifierhttp://arxiv.org/abs/cond-mat/0308224
dc.identifierPhysical Review B 69, 075110 (2004)
dc.identifierdoi:10.1103/PhysRevB.69.075110
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22012
dc.subjectStrongly Correlated Electrons
dc.titleStructural, electronic, and magneto-optical properties of YVO$_3$
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