Anomalous metallic state in the vicinity of metal to valence-bond solid insulator transition in LiVS2

N. Katayama, M. Uchida, D. Hashizume, S. Niitaka, J. Matsuno, D. Matsumura, Y. Nishihata, J. Mizuki, N. Takeshita, A. Gauzzi, Minoru Nohara, H. Takagi

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Abstract

We investigate LiVS2 and LiVSe2 with a triangular lattice as itinerant analogues of LiVO2 known for the formation of a valence-bond solid (VBS) state out of an S=1 frustrated magnet. LiVS2, which is located at the border between a metal and a correlated insulator, shows a first order transition from a paramagnetic metal to a VBS insulator at Tc∼305K upon cooling. The presence of a VBS state in the close vicinity of insulator-metal transition may suggest the importance of itinerancy in the formation of a VBS state. We argue that the high temperature metallic phase of LiVS2 has a pseudogap, likely originating from the VBS fluctuation. LiVSe2 was found to be a paramagnetic metal down to 2 K.

Original languageEnglish
Article number146405
JournalPhysical Review Letters
Volume103
Issue number14
DOIs
Publication statusPublished - Oct 2 2009

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insulators
valence
metals
solid state
borders
magnets
transition metals
analogs
cooling

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Katayama, N., Uchida, M., Hashizume, D., Niitaka, S., Matsuno, J., Matsumura, D., ... Takagi, H. (2009). Anomalous metallic state in the vicinity of metal to valence-bond solid insulator transition in LiVS2. Physical Review Letters, 103(14), [146405]. https://doi.org/10.1103/PhysRevLett.103.146405

Anomalous metallic state in the vicinity of metal to valence-bond solid insulator transition in LiVS2. / Katayama, N.; Uchida, M.; Hashizume, D.; Niitaka, S.; Matsuno, J.; Matsumura, D.; Nishihata, Y.; Mizuki, J.; Takeshita, N.; Gauzzi, A.; Nohara, Minoru; Takagi, H.

In: Physical Review Letters, Vol. 103, No. 14, 146405, 02.10.2009.

Research output: Contribution to journalArticle

Katayama, N, Uchida, M, Hashizume, D, Niitaka, S, Matsuno, J, Matsumura, D, Nishihata, Y, Mizuki, J, Takeshita, N, Gauzzi, A, Nohara, M & Takagi, H 2009, 'Anomalous metallic state in the vicinity of metal to valence-bond solid insulator transition in LiVS2', Physical Review Letters, vol. 103, no. 14, 146405. https://doi.org/10.1103/PhysRevLett.103.146405
Katayama, N. ; Uchida, M. ; Hashizume, D. ; Niitaka, S. ; Matsuno, J. ; Matsumura, D. ; Nishihata, Y. ; Mizuki, J. ; Takeshita, N. ; Gauzzi, A. ; Nohara, Minoru ; Takagi, H. / Anomalous metallic state in the vicinity of metal to valence-bond solid insulator transition in LiVS2. In: Physical Review Letters. 2009 ; Vol. 103, No. 14.
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AU - Matsuno, J.

AU - Matsumura, D.

AU - Nishihata, Y.

AU - Mizuki, J.

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AU - Gauzzi, A.

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