Volume 57, Number 2, January 2002
|Page(s)||233 - 239|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 September 2002|
Temperature-dependent Fermi surface in CeBiPt
Physikalisches Institut, Universität Karlsruhe -
D-76128 Karlsruhe, Germany
2 Institut für Mathematische Physik, TU Braunschweig D-38106 Braunschweig, Germany
3 Department of Quantum Matter, ADSM, Hiroshima University Higashi-Hiroshima 739-8526, Japan
4 Grenoble High Magnetic Field Laboratory, MPI-Festkörperforschung and CNRS - F-38042 Grenoble, France
Accepted: 23 October 2001
Shubnikov-de Haas (SdH) and Hall-effect measurements of CeBiPt and LaBiPt reveal the presence of very small Fermi surfaces with hole-like charge carriers for both semimetals. Reasonable agreement with band structure calculations is achieved when taking spin-orbit coupling into account and assuming localized Ce 4f electrons. For CeBiPt, we observe a strong temperature dependence of the SdH frequency, i.e., an increase from at 10 K to at 0.4 K, indicating a possible hybridization of the f electrons.
PACS: 71.20.Eh – Rare earth metals and alloys / 71.18.+y – Fermi surface: calculations and measurements; effective mass, g factor / 71.15.Rf – Relativistic effects
© EDP Sciences, 2002
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