TY - JOUR
T1 - Large entropy change derived from orbitally assisted three-centered two-electron σ bond formation in metallic Li0.33VS2
AU - Katayama, N.
AU - Tamura, S.
AU - Yamaguchi, T.
AU - Sugimoto, Koudai
AU - Iida, K.
AU - Matsukawa, T.
AU - Hoshikawa, A.
AU - Ishigaki, T.
AU - Kobayashi, S.
AU - Ohta, Y.
AU - Sawa, H.
PY - 2018/8/7
Y1 - 2018/8/7
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.98.081104
DO - 10.1103/PhysRevB.98.081104
M3 - Article
AN - SCOPUS:85051497248
VL - 98
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 2469-9950
IS - 8
M1 - 081104
ER -