The effect of lattice distortion and orbital mixing on the optical and magnetic properties of cubic RMnO$sub 3$ (R = La, Pr, Nd, Gd, Tb)

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dc.creatorKim, M. W.
dc.creatorMoon, S. J.
dc.creatorJung, J. H.
dc.creatorYu, Jaejun
dc.creatorParashar, Sachin
dc.creatorMurugavel, P.
dc.creatorNoh, T. W.
dc.date2005-04-25
dc.date.accessioned2026-07-07T03:04:54Z
dc.date.available2026-07-07T03:04:54Z
dc.descriptionWe investigated the $ab$-plane absorption spectra of $R$MnO$%_{3}$ ($R$ = La, Pr, Nd, Gd, and Tb) thin films. As the $R$-ion size decreases, we observed a drastic suppression of the 2 eV peak, \textit{i.e.} the inter-site optical transition between spin- and orbital-aligned states across the Mott gap. We found that both lattice distortion and the corresponding orbital mixing of the ordered orbital state should play an important role in the 2 eV peak suppression. We also found that the 2 eV spectral weight is proportional to the $A$-type antiferromagnetic ordering temperature, which suggests that the magnetic interaction might be sensitively coupled to the orbital mixing.
dc.identifierhttps://arxiv.org/abs/cond-mat/0504616
dc.identifierhttp://arxiv.org/abs/cond-mat/0504616
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26260
dc.subjectStrongly Correlated Electrons
dc.titleThe effect of lattice distortion and orbital mixing on the optical and magnetic properties of cubic RMnO$sub 3$ (R = La, Pr, Nd, Gd, Tb)
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