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

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Page 50

In the harmonic approximation it is assumed that the force on an atom is

proportional to the first power of its displacement. The

the elastic, optical and dielectric properties of non-metallic crystals in a limited

frequency ...

In the harmonic approximation it is assumed that the force on an atom is

proportional to the first power of its displacement. The

**theory**serves to correlatethe elastic, optical and dielectric properties of non-metallic crystals in a limited

frequency ...

Page 290

The

, since this gave an adequate treatment for the transmission experiments.

Recently, however, experiments on Faraday rotation [6] have been performed

and ...

The

**theory**at this point concerned itself exclusively with the absorption coefficient, since this gave an adequate treatment for the transmission experiments.

Recently, however, experiments on Faraday rotation [6] have been performed

and ...

Page 326

However, as the structure was developed, particularly in the case of the indirect

exciton transition, it became necessary to develop a phenomenological

similar to that of the spin Hamiltonian for paramagnetic resonance, which took

into ...

However, as the structure was developed, particularly in the case of the indirect

exciton transition, it became necessary to develop a phenomenological

**theory**similar to that of the spin Hamiltonian for paramagnetic resonance, which took

into ...

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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