Specific Heat and Electrical Transport Properties of Sn0.8Ag0.2Te Superconductor
Yoshikazu Mizuguchi, Akira Yamada, Ryuji Higashinaka, Tatsuma D., Matsuda, Yuji Aoki, Osuke Miura, Masanori Nagao
TL;DR
This study investigates the superconducting and transport properties of Sn0.8Ag0.2Te, revealing its fully-gapped superconductivity, critical magnetic fields, and p-type doping behavior of silver.
Contribution
It provides detailed thermodynamic and transport measurements of Sn0.8Ag0.2Te, a newly identified superconductor, highlighting its superconducting nature and doping characteristics.
Findings
Superconducting transition temperature around 2.4 K.
Confirmation of bulk, fully-gapped superconductivity.
Positive Hall coefficient indicating p-type doping.
Abstract
Sn0.8Ag0.2Te is a new superconductor with Tc ~ 2.4 K. The superconducting properties of Sn0.8Ag0.2Te have been investigated by specific heat measurements under magnetic fields. Bulk nature of superconductivity was confirmed from the amplitude of the specific heat jump at the superconducting transition, and the amplitude is consistent with fully-gapped superconductivity. Upper critical field was estimated from specific heat and electrical resistivity measurements under magnetic fields. The Hall coefficient was positive, suggesting that the Ag acts as a p-type dopant in Sn0.8Ag0.2Te.
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