Band Structure of Metals under High Pressure. II. Fermi Surface of Cs

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  • Yamashita Jiro
    The Institute for Solid State Physics, The University of Tokyo
  • Asano Setsuro
    The Institute for Solid State Physics, The University of Tokyo

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  • Band structure of metals under high pressure-2-Fermi surface of Cs

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Abstract

The band structures and the Fermi surfaces of both b.c.c. and f.c.c. Cs are calculated for various lattice volumes: 1.0 V0 through 0.15 V0 where V0 is the volume of the normal pressure. The Fermi surface changes from a sphere to some complicated surfaces with decreasing volume. The character of the wave functions of the conduction electrons changes from sp-like to d-like with volume contraction. By the phase change observed at 42 kbar considerable amount of conduction electrons seems to be transferred from sp-like to d-like states.

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