Synthesis of lithium- and pyridine-intercalated superconductors Lix (C5H5N)y SnSe2

Chika Sakamoto; Takashi Noji; Takayuki Kawamata; Masatsune Kato

doi:10.35848/1347-4065/ac93d6

Synthesis of lithium- and pyridine-intercalated superconductors Li_x(C₅H₅N)_ySnSe₂

Chika Sakamoto, Takashi Noji, Takayuki Kawamata, Masatsune Kato

ENG - Applied Physics

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

Abstract

Superconductors Li x (C5H5N) y SnSe2 (x = 0.3-1.0) have been successfully synthesized by the intercalation of pyridine molecules together with Li+ ions into an insulator SnSe2 with the layered structure. The co-intercalation has been carried out by immersing powdery SnSe2 and Li metal in the organic solvent pyridine at 70 °C. The spacing between the adjacent Sn layers is expanded from ∼6 to ∼12 Å through the co-intercalation. It has been found that the superconducting transition temperature T c ∼7.5-7.9 K is almost independent of Li-content x(Li) and the superconducting volume fraction has a maximum at x(Li) = 0.5.

Original language	English
Article number	108002
Journal	Japanese journal of applied physics
Volume	61
Issue number	10
DOIs	https://doi.org/10.35848/1347-4065/ac93d6
Publication status	Published - 2022 Oct 1

Keywords

electron-doping
intercalation
lithium
organic molecule
superconducting transition temperature
superconductivity

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.35848/1347-4065/ac93d6

Cite this

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title = "Synthesis of lithium- and pyridine-intercalated superconductors Lix (C5H5N)y SnSe2",

abstract = "Superconductors Li x (C5H5N) y SnSe2 (x = 0.3-1.0) have been successfully synthesized by the intercalation of pyridine molecules together with Li+ ions into an insulator SnSe2 with the layered structure. The co-intercalation has been carried out by immersing powdery SnSe2 and Li metal in the organic solvent pyridine at 70 °C. The spacing between the adjacent Sn layers is expanded from ∼6 to ∼12 {\AA} through the co-intercalation. It has been found that the superconducting transition temperature T c ∼7.5-7.9 K is almost independent of Li-content x(Li) and the superconducting volume fraction has a maximum at x(Li) = 0.5.",

keywords = "electron-doping, intercalation, lithium, organic molecule, superconducting transition temperature, superconductivity",

author = "Chika Sakamoto and Takashi Noji and Takayuki Kawamata and Masatsune Kato",

note = "Funding Information: This work was supported by Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant No. 19K05241). Publisher Copyright: {\textcopyright} 2022 The Japan Society of Applied Physics.",

year = "2022",

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language = "English",

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T1 - Synthesis of lithium- and pyridine-intercalated superconductors Lix (C5H5N)y SnSe2

AU - Sakamoto, Chika

AU - Noji, Takashi

AU - Kawamata, Takayuki

AU - Kato, Masatsune

PY - 2022/10/1

Y1 - 2022/10/1

N2 - Superconductors Li x (C5H5N) y SnSe2 (x = 0.3-1.0) have been successfully synthesized by the intercalation of pyridine molecules together with Li+ ions into an insulator SnSe2 with the layered structure. The co-intercalation has been carried out by immersing powdery SnSe2 and Li metal in the organic solvent pyridine at 70 °C. The spacing between the adjacent Sn layers is expanded from ∼6 to ∼12 Å through the co-intercalation. It has been found that the superconducting transition temperature T c ∼7.5-7.9 K is almost independent of Li-content x(Li) and the superconducting volume fraction has a maximum at x(Li) = 0.5.

AB - Superconductors Li x (C5H5N) y SnSe2 (x = 0.3-1.0) have been successfully synthesized by the intercalation of pyridine molecules together with Li+ ions into an insulator SnSe2 with the layered structure. The co-intercalation has been carried out by immersing powdery SnSe2 and Li metal in the organic solvent pyridine at 70 °C. The spacing between the adjacent Sn layers is expanded from ∼6 to ∼12 Å through the co-intercalation. It has been found that the superconducting transition temperature T c ∼7.5-7.9 K is almost independent of Li-content x(Li) and the superconducting volume fraction has a maximum at x(Li) = 0.5.

KW - electron-doping

KW - intercalation

KW - lithium

KW - organic molecule

KW - superconducting transition temperature

KW - superconductivity

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