Magnetic-field- and temperature-dependent fermi surface of CeBiPt
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Date
2006
Volume
8
Issue
Journal
Series Titel
Book Title
Publisher
Milton Park : Taylor & Francis
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Abstract
The half-Heusler compounds CeBiPt and LaBiPt are semimetals with very low charge-carrier concentrations as evidenced by Shubnikov–de Haas (SdH) and Hall-effect measurements. Neutron-scattering results reveal a simple antiferromagnetic structure in CeBiPt below TN = 1.15 K. The band structure of CeBiPt sensitively depends on temperature, magnetic field and stoichiometry. Above a certain, sample-dependent, threshold field (B>25 T), the SdH signal disappears and the Hall coefficient reduces significantly. These effects are absent in the non-4f compound LaBiPt. Electronic-band-structure calculations can well explain the observed behaviour by a 4f-polarization-induced Fermi-surface modification.
Description
Keywords
Antiferromagnetic materials, Band structure, Bismuth compounds, Carrier concentration, Charge carriers, Fermi surface, Hall effect, Magnetic field effects, Metalloids, Neutron scattering, Platinum compounds, Polarization, Shubnikov-de Haas effect, Stoichiometry, Surface treatment
Citation
Wosnitza, J., Goll, G., Bianchi, A. D., Bergk, B., Kozlova, N., Opahle, I., et al. (2006). Magnetic-field- and temperature-dependent fermi surface of CeBiPt. 8. https://doi.org//10.1088/1367-2630/8/9/174
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License
CC BY-NC-SA 3.0 Unported