Large entropy change derived from orbitally assisted three-centered two-electron σ bond formation in metallic Li0.33VS2

N. Katayama, S. Tamura, T. Yamaguchi, Koudai Sugimoto, K. Iida, T. Matsukawa, A. Hoshikawa, T. Ishigaki, S. Kobayashi, Y. Ohta, H. Sawa

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We discuss herein the emergence of a large entropy change in metallic Li0.33VS2 derived from orbitally assisted loose σ bond formation. Comprehensive structural studies based on synchrotron x-ray and neutron diffraction analyses clarify the fabrication of ribbon chains at 375 K, consisting of multiple three-centered two-electron σ bonds based on the viewpoint of local chemical bonding. Although the metallic conductivity persists down to the lowest temperature measured, an exceptionally large entropy change as a metal, as much as ΔS=6.6Jmol-1K-1, appears at the transition. The emergence of a large entropy change in a metallic state may possibly lead to different functional materials, such as a heat-storage material with a rapid thermal response.

Original languageEnglish
Article number081104
JournalPhysical Review B
Volume98
Issue number8
DOIs
Publication statusPublished - 2018 Aug 7
Externally publishedYes

Fingerprint

Entropy
entropy
Electrons
heat storage
Heat storage
electrons
Functional materials
Neutron diffraction
Synchrotrons
ribbons
neutron diffraction
synchrotrons
x ray diffraction
Metals
Fabrication
X rays
conductivity
fabrication
metals
Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Large entropy change derived from orbitally assisted three-centered two-electron σ bond formation in metallic Li0.33VS2. / Katayama, N.; Tamura, S.; Yamaguchi, T.; Sugimoto, Koudai; Iida, K.; Matsukawa, T.; Hoshikawa, A.; Ishigaki, T.; Kobayashi, S.; Ohta, Y.; Sawa, H.

In: Physical Review B, Vol. 98, No. 8, 081104, 07.08.2018.

Research output: Contribution to journalArticle

Katayama, N, Tamura, S, Yamaguchi, T, Sugimoto, K, Iida, K, Matsukawa, T, Hoshikawa, A, Ishigaki, T, Kobayashi, S, Ohta, Y & Sawa, H 2018, 'Large entropy change derived from orbitally assisted three-centered two-electron σ bond formation in metallic Li0.33VS2', Physical Review B, vol. 98, no. 8, 081104. https://doi.org/10.1103/PhysRevB.98.081104
Katayama, N. ; Tamura, S. ; Yamaguchi, T. ; Sugimoto, Koudai ; Iida, K. ; Matsukawa, T. ; Hoshikawa, A. ; Ishigaki, T. ; Kobayashi, S. ; Ohta, Y. ; Sawa, H. / Large entropy change derived from orbitally assisted three-centered two-electron σ bond formation in metallic Li0.33VS2. In: Physical Review B. 2018 ; Vol. 98, No. 8.
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AU - Iida, K.

AU - Matsukawa, T.

AU - Hoshikawa, A.

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