A Raman study of the organic superconductor κ-(BEDT-TTF)2Cu(SCN)2 at high pressure

R. D. McDonald, A. K. Klehe, A. P. Jephcoat, H. Olijnyk, T. Sasaki, W. Hayes, J. Singleton

研究成果: Letter査読

5 被引用数 (Scopus)

抄録

The Raman spectrum of the organic superconductor κ-(BEDT-TTF)2Cu(SCN)2 has been measured under hydrostatic pressures up to 1.5 GPa at room temperature. Linear variation of all the observed modes with pressure confirms the absence of a structural phase transition in this pressure range. The Raman spectra reveal three low-frequency features that rapidly stiffen with pressure, d ln v/dP = 5-17% GPa-1; comparison with x-ray data indicates assignment to lattice modes. By contrast, most Raman-active intramolecular vibrations stiffen by only 0.1-1% GPa-1. Contrary to expectations from a previous high-pressure x-ray study, we do not observe a pressure induced splitting of the 3Ag mode.

本文言語English
ページ(範囲)L291-L298
ジャーナルJournal of Physics Condensed Matter
13
15
DOI
出版ステータスPublished - 2001 4 16

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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