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

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

doi:10.1016/0038-1098(94)90580-0

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

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

IMR - Materials Property Division

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23 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	701-704
Number of pages	4
Journal	Solid State Communications
Volume	89
Issue number	8
DOIs	https://doi.org/10.1016/0038-1098(94)90580-0
Publication status	Published - 1994 Feb

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

abstract = "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.",

author = "M. Yoshizawa and Y. Nakamura and T. Sasaki and N. Toyota",

note = "Funding Information: The authors thank Prof. B. LiRhi and Dr. M. I.ang for valuable discussions, and Mr. M. Saito, Mr. S. Kamio and Mr. T. Yabuki for their help in the experiments. This work was partly supported by a Grant-in-Aid for Scientific Research from the Japanese Ministry of Education, Culture and Science ( Grant No. 05640397).",

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doi = "10.1016/0038-1098(94)90580-0",

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AU - Yoshizawa, M.

AU - Nakamura, Y.

AU - Sasaki, T.

AU - Toyota, N.

N1 - Funding Information: The authors thank Prof. B. LiRhi and Dr. M. I.ang for valuable discussions, and Mr. M. Saito, Mr. S. Kamio and Mr. T. Yabuki for their help in the experiments. This work was partly supported by a Grant-in-Aid for Scientific Research from the Japanese Ministry of Education, Culture and Science ( Grant No. 05640397).

PY - 1994/2

Y1 - 1994/2

N2 - 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.

AB - 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.

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

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