Composition-induced structural instability and strong-coupling superconductivity in Au1-xPdxTe2

Kazutaka Kudo, Hiroyuki Ishii, Minoru Nohara

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The physical properties and structural evolution of the MX2-type solid solution Au1-xPdxTe2are 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 Tc= 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.

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - Sep 4 2018

ASJC Scopus subject areas

  • General

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