Pressure-induced superconductivity in SnSb2Te4
Peng Song, Ryo Matsumoto, Zhufeng Hou, Shintaro Adachi, Hiroshi Hara,, Yoshito Saito, P. B. Castro, Hiroyuki Takeya, and Yoshihiko Takano
TL;DR
This study reports the discovery of pressure-induced superconductivity in SnSb2Te4, a phase change material, with transition temperatures increasing under high pressure up to 7.4K at 32.6 GPa.
Contribution
It is the first demonstration of superconductivity in SnSb2Te4 induced by pressure, expanding the understanding of phase change materials' electronic properties.
Findings
Superconductivity appears at 2.1 K under 8.1 GPa.
Transition temperature increases to 7.4 K at 32.6 GPa.
Superconductivity was observed using resistance measurements under high pressure.
Abstract
We report the discovery of a new superconductor from phase change materials SnSb2Te4. Single crystals of SnSb2Te4 were grown using a conventional melting-growth method. The sample resistance under pressure was measured using an originally designed diamond anvil cell with boron-doped diamond electrodes. The pressure dependence of the resistance has been measured up to 32.6 GPa. The superconducting transition of SnSb2Te4 appeared at 2.1 K(Tconset) under 8.1 GPa, which was further increased with applied pressure to a maximum onset transition temperature 7.4K under 32.6 GPa.
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