Superconductivity in FeTe0.8S0.2 induced by battery-like reaction
Aichi Yamashita, Satoshi Demura, Masashi Tanaka, Keita Deguchi, Takuma, Yamaki, Hiroshi Hara, Kouji Suzuki, Yunchao Zhang, Saleem James Denholme,, Hiroyuki Okazaki, Masaya Fujioka, Takahide Yamaguchi, Hiroyuki Takeya,, Yoshihiko Takano
TL;DR
This paper demonstrates that superconductivity in FeTe0.8S0.2 can be induced through an electrochemical process similar to a battery reaction, offering a new method for developing superconducting materials.
Contribution
It introduces a novel electrochemical approach to induce superconductivity in FeTe0.8S0.2 by de-intercalating excess Fe using a battery-like reaction.
Findings
Superconductivity improves with increased applied voltage up to 1.5 V.
Electrochemical de-intercalation effectively induces superconductivity.
The method offers a new pathway for developing superconducting materials.
Abstract
Superconductivity is successfully induced by utilizing a battery-like reaction found in a typical Li-ion battery. Excess Fe in FeTe0.8S0.2 is electrochemically de-intercalated by applying a voltage in a citric acid solution. The superconducting properties improve with an increase in the applied voltage up to 1.5 V. This result suggests that an electrochemical reaction can be used as a novel method to develop new superconducting materials.
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