Observations of acoustic de Haas-van Alphen effect in α-(ET)2NH4Hg(SCN)4

H. Matsui, M. Yamaguchi, S. Endo, H. Uozaki, N. Toyota

Research output: Contribution to journalConference articlepeer-review


The acoustic de Haas-van Alphen (dHvA) effect is observed as a function of magnetic field for the longitudinal ultrasound frequency 53.4 MHz traveling along the b* direction in the quasi-two-dimensional superconductor α-(ET)2NH4Hg(SCN)4 with Tc approx. 1 K. From calculating the oscillatory amplitude with the use of the Kataoka and Goto formulations, the area coefficient relating to the electron-lattice coupling is estimated to be about 3.5. The dominant contribution comes from the multiband term corresponding to the inter-band charge transfer. The anomaly in the longitudinal velocity around 20 and 60 K is also described.

Original languageEnglish
Pages (from-to)1840-1841
Number of pages2
JournalSynthetic Metals
Issue number1-3
Publication statusPublished - 1999 Jun 24
EventProceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) - Montpellier
Duration: 1998 Jul 121998 Jul 18


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