Orbital fluctuations and orbital flipping in RVO3 perovskites

J. Q. Yan; J. S. Zhou; J. B. Goodenough; Y. Ren; J. G. Cheng; S. Chang; J. Zarestky; O. Garlea; A. Liobet; H. D. Zhou; Y. Sui; W. H. Su; R. J. McQueeney

doi:10.1103/PhysRevLett.99.197201

Orbital fluctuations and orbital flipping in RVO3 perovskites

J. Q. Yan, J. S. Zhou, J. B. Goodenough, Y. Ren, J. G. Cheng, S. Chang, J. Zarestky, O. Garlea, A. Liobet, H. D. Zhou, Y. Sui, W. H. Su, R. J. McQueeney

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34 Scopus citations

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 TCG 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 t2 and et hybridization in T1g3 site symmetry.

Original language	English
Article number	197201
Journal	Physical Review Letters
Volume	99
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.99.197201
State	Published - Nov 8 2007
Externally published	Yes

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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 TCG 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 t2 and et hybridization in T1g3 site symmetry.",

author = "Yan, {J. Q.} and Zhou, {J. S.} and Goodenough, {J. B.} and Y. Ren and Cheng, {J. G.} and S. Chang and J. Zarestky and O. Garlea and A. Liobet and Zhou, {H. D.} and Y. Sui and Su, {W. H.} and McQueeney, {R. J.}",

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month = nov,

day = "8",

doi = "10.1103/PhysRevLett.99.197201",

language = "English",

volume = "99",

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T1 - Orbital fluctuations and orbital flipping in RVO3 perovskites

AU - Yan, J. Q.

AU - Zhou, J. S.

AU - Goodenough, J. B.

AU - Ren, Y.

AU - Cheng, J. G.

AU - Chang, S.

AU - Zarestky, J.

AU - Garlea, O.

AU - Liobet, A.

AU - Zhou, H. D.

AU - Sui, Y.

AU - Su, W. H.

AU - McQueeney, R. J.

PY - 2007/11/8

Y1 - 2007/11/8

N2 - 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 TCG 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 t2 and et hybridization in T1g3 site symmetry.

AB - 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 TCG 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 t2 and et hybridization in T1g3 site symmetry.

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U2 - 10.1103/PhysRevLett.99.197201

DO - 10.1103/PhysRevLett.99.197201

M3 - Article

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SN - 0031-9007

VL - 99

JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Orbital fluctuations and orbital flipping in RVO3 perovskites

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