Fermi Surface of Ce-Monopnictides in Various Magnetic Ordered States
Fermi Surface of Ce-Monopnictides in Various Magnetic Ordered States
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不同磁有序态 Ce-单硝化物的费米面
DOI：
10.7567/jjaps.26s3.477
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发表时间：
1987
影响因子：
1.5
通讯作者：
T. Kasuya
中科院分区：
文献类型：
--
作者：
O. Sakai;Y. Kaneta;T. Kasuya
在p-f混合模型的基础上，通过对Ce离子中各向异性d-f交换作用的全面处理，对CeSb和CeBi的铁磁性相和铁磁性相的能带结构进行了计算。计算结果与De Haas van Alphen实验观测到的费米面很好地吻合。没有观察到与被占据的f态杂化最强的带。由类磁振子模的散射计算出该带的质量增强因子约为11.6。这与低温比热测量所预期的重费米子特性是一致的。
Band structure calculations for the ferro- and ferrimagnetic phases of CeSb and CeBi are made based on the p-f mixing model and by including the full treatment of the anisotropic d-f exchange interaction in Ce ion. Calculated results well correspond to the Fermi surfaces observed by the de Haas van Alphen experiments. The band which hybridizes most strongly with the occupied f-states has not been observed. The mass enhancement factor for this band due to the scattering with magnon like modes is calculated to be about 11.6. This is consistent with the heavy fermion character of the band expected from low temperature specific heat measurement.