Frustrated superexchange interaction versus orbital order in a LaVO3 crystal

J. S. Zhou; Y. Ren; J. Q. Yan; J. F. Mitchell; J. B. Goodenough

doi:10.1103/PhysRevLett.100.046401

Frustrated superexchange interaction versus orbital order in a LaVO3 crystal

J. S. Zhou, Y. Ren, J. Q. Yan, J. F. Mitchell, J. B. Goodenough

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Measurements of magnetic, transport properties, thermal conductivity, and magnetization under pressure as well as neutron diffraction have been made on a single crystal and powder sample of LaVO3. The Néel temperature was found to mark a transition from the phase with both frustrated superexchange interaction and spin-orbit λL•S coupling to the phase where the Jahn-Teller orbital-lattice coupling dominates. The dramatic reduction of absolute entropy in the paramagnetic phase is explained in terms of forming a long-range coherent state due to the interference between frustrated orbits and spins.

Original language	English
Article number	046401
Journal	Physical Review Letters
Volume	100
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.100.046401
State	Published - Jan 28 2008
Externally published	Yes

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10.1103/PhysRevLett.100.046401

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abstract = "Measurements of magnetic, transport properties, thermal conductivity, and magnetization under pressure as well as neutron diffraction have been made on a single crystal and powder sample of LaVO3. The N{\'e}el temperature was found to mark a transition from the phase with both frustrated superexchange interaction and spin-orbit λL•S coupling to the phase where the Jahn-Teller orbital-lattice coupling dominates. The dramatic reduction of absolute entropy in the paramagnetic phase is explained in terms of forming a long-range coherent state due to the interference between frustrated orbits and spins.",

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AU - Zhou, J. S.

AU - Ren, Y.

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AU - Mitchell, J. F.

AU - Goodenough, J. B.

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N2 - Measurements of magnetic, transport properties, thermal conductivity, and magnetization under pressure as well as neutron diffraction have been made on a single crystal and powder sample of LaVO3. The Néel temperature was found to mark a transition from the phase with both frustrated superexchange interaction and spin-orbit λL•S coupling to the phase where the Jahn-Teller orbital-lattice coupling dominates. The dramatic reduction of absolute entropy in the paramagnetic phase is explained in terms of forming a long-range coherent state due to the interference between frustrated orbits and spins.

AB - Measurements of magnetic, transport properties, thermal conductivity, and magnetization under pressure as well as neutron diffraction have been made on a single crystal and powder sample of LaVO3. The Néel temperature was found to mark a transition from the phase with both frustrated superexchange interaction and spin-orbit λL•S coupling to the phase where the Jahn-Teller orbital-lattice coupling dominates. The dramatic reduction of absolute entropy in the paramagnetic phase is explained in terms of forming a long-range coherent state due to the interference between frustrated orbits and spins.

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DO - 10.1103/PhysRevLett.100.046401

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JO - Physical Review Letters

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Frustrated superexchange interaction versus orbital order in a LaVO3 crystal

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