title: Orbital fluctuations and orbital flipping in RVO3 perovskites.
abstract: The effect of the average R-site ionic radius IR and variance on the orbital and magnetic order in R3+-doped YVO3 was studied in Y1-xLaxVO3 and Y1-x(La0.2337Lu0.7663)xVO3 with fixed IR. The orbital flipping temperature T{CG} increases nonlinearly with increasing R-site variance, indicating that the V-O-V bond angle is not the primary driving force stabilizing the C-type orbitally ordered phase. The suppressed thermal conductivity in the G-type orbitally ordered phase signals some remaining orbital randomness that is enhanced by t{2} and et hybridization in {3}T{1g} site symmetry.
authors.affiliation: Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA.
authors.forename: J-Q
authors.initials: JQ
authors.lastname: Yan
authors.forename: J-S
authors.initials: JS
authors.lastname: Zhou
authors.forename: J B
authors.initials: JB
authors.lastname: Goodenough
authors.forename: Y
authors.initials: Y
authors.lastname: Ren
authors.forename: J G
authors.initials: JG
authors.lastname: Cheng
authors.forename: S
authors.initials: S
authors.lastname: Chang
authors.forename: J
authors.initials: J
authors.lastname: Zarestky
authors.forename: O
authors.initials: O
authors.lastname: Garlea
authors.forename: A
authors.initials: A
authors.lastname: Llobet
authors.forename: A
authors.initials: A
authors.lastname: Liobet
authors.forename: H D
authors.initials: HD
authors.lastname: Zhou
authors.forename: Y
authors.initials: Y
authors.lastname: Sui
authors.forename: W H
authors.initials: WH
authors.lastname: Su
authors.forename: R J
authors.initials: RJ
authors.lastname: McQueeney