## Proceedings of the International School of Physics "Enrico Fermi.", Volume 22N. Zanichelli, 1963 - Nuclear physics |

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Page 43

The hole level at A- = 0, taking

splitting, is six times degenerate, corresponding to the three space functions

times the two

The hole level at A- = 0, taking

**spin**into account, but in the absence of**spin**-orbitsplitting, is six times degenerate, corresponding to the three space functions

times the two

**spin**functions. The**spin**angular momentum may be parallel to the ...Page 47

The bands without

energy surfaces do not deviate much from sphericity near the origin, one can

conclude that there are two types of holes in Ge, with different effective masses.

The bands without

**spin**-orbit interaction are also given for comparison. Since theenergy surfaces do not deviate much from sphericity near the origin, one can

conclude that there are two types of holes in Ge, with different effective masses.

Page 475

In this computation as well as in a recent filcu.ation of the hole susceptibility Xv f°r

germanium by Luttinger and Stiles r46] it is of course necessary to treat the

more explicitly because of the Din-orbit splitting of the valence bands.

In this computation as well as in a recent filcu.ation of the hole susceptibility Xv f°r

germanium by Luttinger and Stiles r46] it is of course necessary to treat the

**spin**more explicitly because of the Din-orbit splitting of the valence bands.

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absorption acceptor approximation assumed band edge band structure Brillouin zone calculated carrier centre charge Chem coefficient components compound concentration conduction band consider constant corresponding crystal curves cyclotron resonance degenerate density diffusion direct transition discussed donor doping effective mass electric field energy gap energy surfaces equation equilibrium example exciton experimental expression Faraday rotation foreign atoms free electron frequency germanium given hence holes imperfections impurity indium antimonide InSb interaction interband ionization ions Journ lattice levels linear liquid magnetic field matrix measurements melt mobility momentum obtained optical p-type phonon Phys potential pressure quantum range reciprocal lattice region samples scattering semiconductors shown in Fig spherical spin spin-orbit structure elements symmetry tensor theory thermodynamic thermodynamic potentials tion transverse valence band valley Voigt effect wave functions wave vector Zeeman effect zero zone