de Haas-van Alphen Effect in LaB2C2
2002 年 71 巻 3 号 p. 693-696
詳細
2002 年 71 巻 3 号 p. 693-696
Fermi surfaces of LaB2C2 were investigated by the measurement of the de Haas-van Alphen (dHvA) oscillations. The angular dependence of the dHvA frequency indicates the presence of the multiple three-dimensional closed Fermi surfaces, that is, the 5d orbitals in lanthanum strongly hybridize with the 2p orbitals in boron-carbon sheets. The angular dependence of the dHvA frequency coincides very well with that predicted by the band calculations. The branch having the highest frequency larger than cross-section of the 1st Brillouin zone corresponds to the large orbit originating from magnetic breakdown.
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