Phys. Rev. B 32, 2985–2992 (1985)Structural phase transition and superconducting properties of Th3P4-type La chalcogenidesReceived 13 November 1984; published in the issue dated 1 September 1985 We report measurements of the electrical resistivity and the specific heat at the structural transition and in the superconducting state at low temperatures for samples with composition La3-xS4, La3-xSe4, and La3Te4. The results show that the structural transition and the anomalous superconducting properties of La3S4 and La3Se4 are due to a band-structure anomaly at the Fermi level. © 1985 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.32.2985
DOI:
10.1103/PhysRevB.32.2985
PACS:
72.15.-v, 64.70.-p, 74.70.-b
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