Electronic structure and Fermi surface of UB12
Electronic structure and Fermi surface of UB12
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DOI：
10.1143/jpsj.60.987
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发表时间：
1991-03
影响因子：
1.7
通讯作者：
H. Yamagami;A. Hasegawa
中科院分区：
文献类型：
--
作者：
H. Yamagami;A. Hasegawa
Based on the itinerant-electron model for the 5f electrons, the energy band structure and the Fermi surface are calculated for the cubic uranium dodecaboride UB 12 , known to be a paramagnet having the electronic specific heat constant of 20 mJ/K 2 mole, by a self-consistent relativistic APW method with the exchange and correlation potential in the local-density approximation. The energy band structure is that of a compensated metal having 0.32 holes/cell and the compensating number of electrons. Both the hole and the electron sheets of the Fermi surface are multiply-connected with open orbits, the direction of which is consistent with the high-field magnetoresistance. By these Fermi surfaces, both the magnitude and the angular dependence of the frequency branches of the de Haas-van Alphen effect observed recently by Ōnuki et al . can be explained reasonably well.
