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

Research output: Contribution to journalLetter

5 Citations (Scopus)

Abstract

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.

Original languageEnglish
JournalJournal of Physics Condensed Matter
Volume13
Issue number15
DOIs
Publication statusPublished - Apr 16 2001
Externally publishedYes

Fingerprint

organic superconductors
Superconducting materials
Raman scattering
Raman spectra
X rays
hydrostatic pressure
Hydrostatic pressure
x rays
low frequencies
vibration
Phase transitions
BEDT-TTF
room temperature

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

McDonald, R. D., Klehe, A. K., Jephcoat, A. P., Olijnyk, H., Sasaki, T., Hayes, W., & Singleton, J. (2001). A Raman study of the organic superconductor κ-(BEDT-TTF)2Cu(SCN)2 at high pressure. Journal of Physics Condensed Matter, 13(15). https://doi.org/10.1088/0953-8984/13/15/101

A Raman study of the organic superconductor κ-(BEDT-TTF)2Cu(SCN)2 at high pressure. / McDonald, R. D.; Klehe, A. K.; Jephcoat, A. P.; Olijnyk, H.; Sasaki, T.; Hayes, W.; Singleton, J.

In: Journal of Physics Condensed Matter, Vol. 13, No. 15, 16.04.2001.

Research output: Contribution to journalLetter

McDonald, RD, Klehe, AK, Jephcoat, AP, Olijnyk, H, Sasaki, T, Hayes, W & Singleton, J 2001, 'A Raman study of the organic superconductor κ-(BEDT-TTF)2Cu(SCN)2 at high pressure', Journal of Physics Condensed Matter, vol. 13, no. 15. https://doi.org/10.1088/0953-8984/13/15/101
McDonald, R. D. ; Klehe, A. K. ; Jephcoat, A. P. ; Olijnyk, H. ; Sasaki, T. ; Hayes, W. ; Singleton, J. / A Raman study of the organic superconductor κ-(BEDT-TTF)2Cu(SCN)2 at high pressure. In: Journal of Physics Condensed Matter. 2001 ; Vol. 13, No. 15.
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AU - Klehe, A. K.

AU - Jephcoat, A. P.

AU - Olijnyk, H.

AU - Sasaki, T.

AU - Hayes, W.

AU - Singleton, J.

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