Superconductivity Induced by Breaking Te2 Dimers of AuTe2
Kazutaka Kudo, Hiroyuki Ishii, Masaya Takasuga, Keita Iba, Seiya, Nakano, Jungeun Kim, Akihiko Fujiwara, Minoru Nohara
TL;DR
This paper reports that breaking Te2 dimers in AuTe2 through platinum doping induces superconductivity at 4.0 K, revealing a link between structural dimer breaking and superconductivity.
Contribution
It demonstrates that disrupting Te2 dimers in AuTe2 induces superconductivity, a novel structural mechanism for superconductivity in this material.
Findings
Superconductivity appears at Tc = 4.0 K after dimer breaking.
Dimer breaking correlates with the emergence of superconductivity.
Structural modulation influences electronic properties in AuTe2.
Abstract
Mineral calaverite AuTe2 is a layered compound with an incommensurately modulated structure. The modulation is characterized by the formation of molecular-like Te2 dimers. We have found that the breaking of Te2 dimers that occurs in Au1-xPtxTe2 results in the emergence of superconductivity at Tc = 4.0 K.
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