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, M. Nohara, H. Takagi

Research output: Contribution to journalArticle

39 Citations (Scopus)

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Anomalous metallic state in the vicinity of metal to valence-bond solid insulator transition in LiVS2'. Together they form a unique fingerprint.

  • Cite this

    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, 103(14), [146405]. https://doi.org/10.1103/PhysRevLett.103.146405