期刊
PHYSICAL REVIEW B
卷 93, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.93.140505
关键词
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资金
- Japan Society for the Promotion of Science (JSPS) [25400372, 26287082, 15H01047, 15H05886]
- Grants-in-Aid for Scientific Research [26287082, 15H01047, 16K05451, 15H05886] Funding Source: KAKEN
The physical properties and structural evolution of the MX2-type solid solution Au1-xPdxTe2 are reported. The end member AuTe2 is a normal metal with a monoclinic distorted CdI2-type structure with preformed Te-Te dimers. A monoclinic-trigonal structural phase transition at a finite temperature occurs upon Pd substitution and is suppressed to zero temperature near x = 0.55, and a superconducting phase with a maximum T-c = 4.65 K emerges. A clear indication of strong-coupling superconductivity is observed near the composition of the structural instability. The competitive relationship between Te-Te dimers and superconductivity is proposed.
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