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

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Page 295

A development similar to that just performed for the allowed

be carried out to obtain expressions for the forbidden

case, the first term M0 in the power series expansion (III.9) is equal to zero and ...

A development similar to that just performed for the allowed

**direct transitions**canbe carried out to obtain expressions for the forbidden

**direct transitions**. For thiscase, the first term M0 in the power series expansion (III.9) is equal to zero and ...

Page 319

This expression can, to a good approximation, be applied to p-type germanium

which has been sufficiently doped, where

have been observed between the split-off valence band and the other two

valence ...

This expression can, to a good approximation, be applied to p-type germanium

which has been sufficiently doped, where

**direct**forbidden interband**transitions**have been observed between the split-off valence band and the other two

valence ...

Page 320

The observations of Hartmann and Kleman[21] on rotation by transmission in

samples of germanium 3 and 50 jxm thick, at energies near that of 10 Iwaveleng/

h)' Fig. 48. - Theoretical curve of Faraday rotation due to forbidden

The observations of Hartmann and Kleman[21] on rotation by transmission in

samples of germanium 3 and 50 jxm thick, at energies near that of 10 Iwaveleng/

h)' Fig. 48. - Theoretical curve of Faraday rotation due to forbidden

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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