Magnetic-field induced band-structure change in CeBiPt

Details Magnetic-field induced band-structure change in CeBiPt Magnetic-field induced band-structure change in CeBiPt

2005-02-11

arxiv.org/abs/cond-mat/0502279v1

Physical Review Letters 95, 086403 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.95.086403

We report on a field-induced change of the electronic band structure of CeBiPt as evidenced by electrical-transport measurements in pulsed magnetic fields. Above ~25 T, the charge-carrier concentration increases nearly 30% with a concomitant disappearance of the Shubnikov-de Haas signal. These features are intimately related to the Ce 4f electrons since for the non-4f compound LaBiPt the Fermi surface remains unaffected. Electronic band-structure calculations point to a 4f-polarization-induced change of the Fermi-surface topology.

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