The Superstructure of the Organic Superconductor β-(BEDT-TTF)2I3 under Pressure

Yoshio Nogami; Seiichi Kagoshima; Hiroyuki Anzai; Madoka Tokumoto; Nobumori Kinoshita; Nobuo Mori; Gunzi Saito

doi:10.1143/JPSJ.59.259

The Superstructure of the Organic Superconductor β-(BEDT-TTF)₂I₃ under Pressure

Yoshio Nogami, Seiichi Kagoshima, Hiroyuki Anzai, Madoka Tokumoto, Nobumori Kinoshita, Nobuo Mori, Gunzi Saito

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

11 Citations (Scopus)

Abstract

An X-ray diffraction study is made on the incommensurate superstructure in the organic superconductor β-(BEDT-TTF)₂I₃ under pressure. The onset temperature of the superstructure decreases from 175 K to 150 K with increasing pressure from 1 bar to about 400 bar, above which no superstructure is found. The wave vector specifying the superstructure is found to change in the range between 100 K and -120 K. This wave-vector change slows down at low pressures. At ambient pressure it takes more than 30 hr to complete the change. This wave-vector change is found to bring about a new “2 K superconducting state” in the title compound.

Original language	English
Pages (from-to)	259-265
Number of pages	7
Journal	journal of the physical society of japan
Volume	59
Issue number	1
DOIs	https://doi.org/10.1143/JPSJ.59.259
Publication status	Published - 1990
Externally published	Yes

Keywords

BEDT-TTF
incommensurate superstructure
organic superconductor
superstructure under pressure

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.59.259

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abstract = "An X-ray diffraction study is made on the incommensurate superstructure in the organic superconductor β-(BEDT-TTF)2I3 under pressure. The onset temperature of the superstructure decreases from 175 K to 150 K with increasing pressure from 1 bar to about 400 bar, above which no superstructure is found. The wave vector specifying the superstructure is found to change in the range between 100 K and -120 K. This wave-vector change slows down at low pressures. At ambient pressure it takes more than 30 hr to complete the change. This wave-vector change is found to bring about a new “2 K superconducting state” in the title compound.",

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AU - Kinoshita, Nobumori

AU - Mori, Nobuo

AU - Saito, Gunzi

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