A change of the superstructure and an associated rise of the superconducting critical temperature in the organic superconductor β-(BEDT-FFT)2I3

S. Kagoshima, Y. Nogami, M. Hasumi, H. Anzai, M. Tokumoto, G. Saito, N. Mori

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22 Citations (Scopus)

Abstract

X-ray diffraction measurement of the superstructure were made under pressure in the title compound. The wave vector of the superstructure was found to become short below about 100 K. This change occurs even at ambient pressure when the sample is kept in the range 100-120 K for a long time, say, 24 h. The sample annealed for 65 h at ambient pressure undergoes a superconducting transition at about 7 K, which is much higher than that observed in samples cooled with a conventional speed. These results are discussed in relation to the so-called "low-Tc" and "high-Tc" states of this compound.

Original languageEnglish
Pages (from-to)1177-1180
Number of pages4
JournalSolid State Communications
Volume69
Issue number12
DOIs
Publication statusPublished - Mar 1989
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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