Magnetic-field- and temperature-dependent fermi surface of CeBiPt

被引：29

作者：

Wosnitza, J. ^{[1
]}

Goll, G.

D Bianchi, A.

Bergk, B.

Kozlova, N.

Opahle, I.

Elgazzar, S.

Richter, Manuel

Stockert, O.

v Loehneysen, H.

Takabatake, T.

机构：

[1] Forschungszentrum Rossendorf EV, HLD, D-01314 Dresden, Germany

[2] Univ Karlsruhe, Inst Phys, D-76128 Karlsruhe, Germany

[3] IFW Dresden, D-01171 Dresden, Germany

[4] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany

[5] Forschungszentrum Karlsruhe, Inst Festkorperphys, D-76021 Karlsruhe, Germany

[6] Hiroshima Univ, ADSM, Dept Quantum Matter, Higashihiroshima 7398530, Japan

[7] Menoufia Univ, Fac Sci, Dept Phys, Shibin Al Kawm, Egypt

来源：

NEW JOURNAL OF PHYSICS | 2006年 / 8卷

关键词：

D O I：

10.1088/1367-2630/8/9/174

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 T-N = 1.15 K. The band structure of CeBiPt sensitively depends on temperature, magnetic field and stoichiometry. Above a certain, sample-dependent, threshold field (B > 25T), 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.

引用

页数：14

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