Sound velocity change at superconducting transition in κ-(BEDT-TTF)2Cu(NCS)2

M. Yoshizawa, Y. Nakamura, T. Sasaki, N. Toyota

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


Longitudinal sound velocity of the organic superconductor κ-(BEDT-TTF)2Cu(NCS)2 single crystals is measured near the superconducting transition as a function of temperature and magnetic field up to 8 T. The sound velocity shows a remarkable decrease below the superconducting transition. The shape of the anomaly is step-like and the amount of its relative change at Tc is -3.8X10-4 in the absence of magnetic field. The sound velocity shows a softening around 3 T. The position of the sound velocity minimum depends on the frequency. This behavior is discussed based on the vortex dynamics.

Original languageEnglish
Pages (from-to)701-704
Number of pages4
JournalSolid State Communications
Issue number8
Publication statusPublished - 1994 Feb


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