Observation of the Specific Heat Jump in the Se-Substituted MoTe 2 Single Crystals

1T'-MoTe has gained considerable attention owing to its topological character. This material undergoes spatial inversion symmetry at 300 K. A structural transition to the T phase, which is represented by a kink in the resistivity, was observed below 250 K without inversion symmetry along the -a...

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Bibliographic Details
Published inMaterials Vol. 15; no. 11
Main Authors Kobayashi, Aoi, Takano, Yoshiki, Demura, Satoshi
Format Journal Article
LanguageEnglish
Published Switzerland 25.05.2022
Subjects
superconductivity
transport properties
transition metal chalcogenides
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Summary:1T'-MoTe has gained considerable attention owing to its topological character. This material undergoes spatial inversion symmetry at 300 K. A structural transition to the T phase, which is represented by a kink in the resistivity, was observed below 250 K without inversion symmetry along the -axis, while superconductivity was observed at 0.1 K. Substitution of Se into this material suppressed the appearance of the kink structure and increased the superconducting transition temperature to 2 K, which is consistent with previously reported results on polycrystalline samples. However, a specific heat jump was observed in the obtained single crystals, which did not exhibit kink structures in their resistivity. The results suggest that the T structure was not suppressed entirely after Se substitution and that superconductivity was achieved without inversion symmetry.
ISSN:1996-1944
1996-1944