Opening of a charge gap with v trimerization in BaV10 O15

T. Kajita; T. Kanzaki; T. Suzuki; J. E. Kim; K. Kato; M. Takata; T. Katsufuji

doi:10.1103/PhysRevB.81.060405

Opening of a charge gap with v trimerization in BaV10 O15

T. Kajita, T. Kanzaki, T. Suzuki, J. E. Kim, K. Kato, M. Takata, T. Katsufuji^*

^*Corresponding author for this work

School of Advanced Science and Engineering

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

48 Citations (Scopus)

Abstract

A structural phase transition at Tc 130K in BaV10 O15 containing modified V3⁺ (3 d2) triangular lattices was studied. It was found that the electrical resistivity jumps by three orders of magnitude and a gap opens up in the optical conductivity spectrum at Tc. It was also found from synchrotron x-ray powder-diffraction measurement that the trimerization of the V ions occurs below Tc. These results indicate that the orbital ordering of V t2g states occurs at Tc and that induces a charge gap near the Fermi level in the electronic states of BaV10 O15.

Original language	English
Article number	060405
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.81.060405
Publication status	Published - 2010 Feb 10

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.81.060405

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title = "Opening of a charge gap with v trimerization in BaV10 O15",

abstract = "A structural phase transition at Tc 130K in BaV10 O15 containing modified V3+ (3 d2) triangular lattices was studied. It was found that the electrical resistivity jumps by three orders of magnitude and a gap opens up in the optical conductivity spectrum at Tc. It was also found from synchrotron x-ray powder-diffraction measurement that the trimerization of the V ions occurs below Tc. These results indicate that the orbital ordering of V t2g states occurs at Tc and that induces a charge gap near the Fermi level in the electronic states of BaV10 O15.",

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AU - Kajita, T.

AU - Kanzaki, T.

AU - Suzuki, T.

AU - Kim, J. E.

AU - Kato, K.

AU - Takata, M.

AU - Katsufuji, T.

PY - 2010/2/10

Y1 - 2010/2/10

N2 - A structural phase transition at Tc 130K in BaV10 O15 containing modified V3+ (3 d2) triangular lattices was studied. It was found that the electrical resistivity jumps by three orders of magnitude and a gap opens up in the optical conductivity spectrum at Tc. It was also found from synchrotron x-ray powder-diffraction measurement that the trimerization of the V ions occurs below Tc. These results indicate that the orbital ordering of V t2g states occurs at Tc and that induces a charge gap near the Fermi level in the electronic states of BaV10 O15.

AB - A structural phase transition at Tc 130K in BaV10 O15 containing modified V3+ (3 d2) triangular lattices was studied. It was found that the electrical resistivity jumps by three orders of magnitude and a gap opens up in the optical conductivity spectrum at Tc. It was also found from synchrotron x-ray powder-diffraction measurement that the trimerization of the V ions occurs below Tc. These results indicate that the orbital ordering of V t2g states occurs at Tc and that induces a charge gap near the Fermi level in the electronic states of BaV10 O15.

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Opening of a charge gap with v trimerization in BaV10 O15

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