Electronic structures in cerium monopnictides

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Abstract

Among Ce-monopnictides, CeBi and CeSb show very interesting magnetic properties, competing and coexisting with the dense Kondo state. The p-f mixing model was used successfully to explain all the anomalous magnetic properties as well as the photoemission spectra. For a better understanding of their electronic states, a more crucial measurement of the de Haas-van Alphen effect has been done and compared with the band calculation. LMTO method was used because it is convenient to select a special character in a muffin-tin sphere and it really can fit the experimental results satisfactorily even if it has no adjustable parameters. However, still some controversies remain. It is pointed out that the d-f Coulomb screening effect for a 4f hole is crucially important to enhance the Kondo temperature in semimetals such as Ce-monopnictides.

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