| Issue |
Europhys. Lett.
Volume 35, Number 1, July I 1996
|
|
|---|---|---|
| Page(s) | 37 - 42 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00527-x | |
| Published online | 01 September 2002 | |
de Haas-van Alphen investigations of the organic metal α-(ET)2TlHg(SeCN)4
1
Physikalisches Institut, Universität Karlsruhe -
D-76128 Karlsruhe, Germany
2
Grenoble High Magnetic Field Laboratory,
Max-Planck-Institut für Festkörperforschung, Centre National de la
Recherche Scientifique - B. P. 166, F-38042 Grenoble, France
3
Institute of Chemical Physics, Russian Academy of Sciences,
142432 Chernogolovka, Russia
Received:
14
March
1996
Accepted:
10
May
1996
We report on the first de Haas-van Alphen (dHvA) studies of the
quasi–two-dimensional (2D) organic metal α-(ET)2TlHg(SeCN)4.
The angular dependence of the dHvA frequency and of the effective cyclotron mass,
mc, follows perfectly the expected 2D 1/cos 
behaviour.
The angular dependence of the absolute amplitude of the dHvA oscillations is in
quantitative agreement with the Lifshitz-Kosevich behaviour. Three distinct
spin-splitting zeros can be observed. The extracted value of 
is in
accordance with a reduced electron-phonon coupling constant
in this non-superconducting material. Contrary to
previous Shubnikov-de Haas results no field dependence of
mc up to 29 T is observed.
PACS: 71.18.+y – Fermi suface: calculations and measurements; effective mass, g factor / 74.70.Kn – Organic superconductors
© EDP Sciences, 1996
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