High-frequency ultrasonic measurements of kappa-(BEDT-TTF)(2) Cu(NCS)(2) by devised transducer

Authors
Simizu, T Yoshimoto, N Nakamura, M Yoshizawa, M
Citation
T. Simizu et al., High-frequency ultrasonic measurements of kappa-(BEDT-TTF)(2) Cu(NCS)(2) by devised transducer, PHYSICA B, 281, 2000, pp. 896-898
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
281
Year of publication
2000
Pages
896 - 898
Database
ISI
SICI code
0921-4526(200006)281:<896:HUMOKC>2.0.ZU;2-0
Abstract
We have measured the ultrasonic velocity of kappa-(BEDT-TTF)(2)Cu(NCS)(2) b elow 140 K by using devised transducers. The hand-made thin transducer with 50 mu m in thickness enables us to make high-frequency measurements with t he frequency over 90 MHz, The longitudinal sound velocity shows a clear sof tening below 70 K with a small minimum at 46 K. This anomaly was discussed in connection with the insulator to metal crossover behavior of this salt. (C) 2000 Elsevier Science B.V. All rights reserved.