Temperature evolution of crystal field splitting in Pr-filled skutterudite
Temperature evolution of crystal field splitting in Pr-filled skutterudite
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DOI：
10.1088/1742-6596/200/1/012071
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
K. Iwasa;Kotaro Saito;Y. Murakami;H. Sugawara
中科院分区：
文献类型：
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作者：
K. Iwasa;Kotaro Saito;Y. Murakami;H. Sugawara
用非弹性中子散射方法研究了PrOs 4P 12和PrRu 4Sb 12晶体中Pr 4f电子的晶场态。基于4f和传导电子之间的交换耦合的理论很好地再现了从基态单重态到三重态的两个激发之间的不同光谱宽度及其温度演化（Becker K W et al.1977 Z.物理学B 28 9）。还观察到低于60 K时能级能量的位移约为1 meV。结果支持Pr填充方钴矿中的p-f杂化效应。
Crystal field states of Pr 4f electrons of PrOs4P12 and PrRu4Sb12 were investigated by inelastic neutron scattering. Different spectral widths between two excitations from the ground state singlet to the triplets and their temperature evolutions are well reproduced by the theory based on the exchange coupling between 4f and conduction electrons (Becker K W et al. 1977 Z. Physik B 28 9). Shift of level energies by around 1 meV below 60 K were also observed. The results support the p-f hybridization effect in Pr-filled skutterudites.