Electrochemical Na-intercalation-induced high-temperature superconductivity in FeSe

Tetsuya Kajita; Takayuki Kawamata; Takashi Noji; Takehiro Hatakeda; Masatsune Kato; Yoji Koike; Takashi Itoh

doi:10.1016/j.physc.2015.09.005

Electrochemical Na-intercalation-induced high-temperature superconductivity in FeSe

Tetsuya Kajita, Takayuki Kawamata, Takashi Noji, Takehiro Hatakeda, Masatsune Kato, Yoji Koike, Takashi Itoh

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

Iron-chalcogenide-based superconductors have attracted much attention due to their relatively high superconducting transition temperatures (T_c) and their simple layered crystal structures. We have performed electrochemical co-intercalation of Na and propylene carbonate (PC) into FeSe, and successfully synthesized a new superconductor, Na_x(PC)_yFe₂Se₂, with T_c = 43 K. The type and amount of intercalated metal, and the electrolyte used in the intercalation affected the superconductivity. Our electrochemical intercalation method should be a useful tool for discovering new superconductors by controlling the intercalation conditions.

Original language	English
Pages (from-to)	104-107
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	519
DOIs	https://doi.org/10.1016/j.physc.2015.09.005
Publication status	Published - 2015 Dec 15

Keywords

Electrochemical sodium intercalation
FeSe
Superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/j.physc.2015.09.005

Cite this

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abstract = "Iron-chalcogenide-based superconductors have attracted much attention due to their relatively high superconducting transition temperatures (Tc) and their simple layered crystal structures. We have performed electrochemical co-intercalation of Na and propylene carbonate (PC) into FeSe, and successfully synthesized a new superconductor, Nax(PC)yFe2Se2, with Tc = 43 K. The type and amount of intercalated metal, and the electrolyte used in the intercalation affected the superconductivity. Our electrochemical intercalation method should be a useful tool for discovering new superconductors by controlling the intercalation conditions.",

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AU - Kajita, Tetsuya

AU - Kawamata, Takayuki

AU - Noji, Takashi

AU - Hatakeda, Takehiro

AU - Kato, Masatsune

AU - Koike, Yoji

AU - Itoh, Takashi

N1 - Publisher Copyright: ï¿½ 2015 Elsevier B.V.

PY - 2015/12/15

Y1 - 2015/12/15

N2 - Iron-chalcogenide-based superconductors have attracted much attention due to their relatively high superconducting transition temperatures (Tc) and their simple layered crystal structures. We have performed electrochemical co-intercalation of Na and propylene carbonate (PC) into FeSe, and successfully synthesized a new superconductor, Nax(PC)yFe2Se2, with Tc = 43 K. The type and amount of intercalated metal, and the electrolyte used in the intercalation affected the superconductivity. Our electrochemical intercalation method should be a useful tool for discovering new superconductors by controlling the intercalation conditions.

AB - Iron-chalcogenide-based superconductors have attracted much attention due to their relatively high superconducting transition temperatures (Tc) and their simple layered crystal structures. We have performed electrochemical co-intercalation of Na and propylene carbonate (PC) into FeSe, and successfully synthesized a new superconductor, Nax(PC)yFe2Se2, with Tc = 43 K. The type and amount of intercalated metal, and the electrolyte used in the intercalation affected the superconductivity. Our electrochemical intercalation method should be a useful tool for discovering new superconductors by controlling the intercalation conditions.

KW - Electrochemical sodium intercalation

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KW - Superconductivity

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Electrochemical Na-intercalation-induced high-temperature superconductivity in FeSe

Abstract

Keywords

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