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- W2142748953 abstract "We present band-structure calculations of ${mathrm{SnTaS}}_{2}$, an intercalation compound in which the Sn atoms have a very uncommon linear coordination by two S atoms and an unusual formal valency ${mathrm{Sn}}^{1+}$. The Sn 5${p}_{x}$ and 5${p}_{y}$ states show strong metal-metal bonding in the intercalant planes and the Fermi level is crossed by a very wide band composed of these Sn 5${p}_{x}$${p}_{y}$ states. Angle-resolved photoelectron spectra are in agreement with the calculated band structure. ${mathrm{SnTaS}}_{2}$ is metallic as is reflected in the measured transport properties (resistivity, Hall effect, thermoelectric power). Low-temperature specific-heat measurements show an anomaly due to superconductivity below 2.8 K. The Sn 4d core levels, measured with photoelectron spectroscopy, show a splitting of 1 eV, indicating the presence of two different types of Sn atoms. This could be due to a valence disproportionation ${2mathrm{S}mathrm{n}}^{+}$ensuremath{rightarrow}${mathrm{Sn}}^{0}$+${mathrm{Sn}}^{2+}$ and rapid valence fluctuations between ${mathrm{Sn}}^{0}$ and ${mathrm{Sn}}^{2+}$." @default.
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- W2142748953 date "1989-12-15" @default.
- W2142748953 modified "2023-09-26" @default.
- W2142748953 title "Band structure, photoelectron spectroscopy, and transport properties ofSnTaS2" @default.
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- W2142748953 doi "https://doi.org/10.1103/physrevb.40.12111" @default.
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