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

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Page 4

Form of the individual

potential U(r) to be inserted into Schrodinger's equation for the determination of

the one-electron energies and

Form of the individual

**wave functions**. The crystal is a periodic structure, thus thepotential U(r) to be inserted into Schrodinger's equation for the determination of

the one-electron energies and

**wave functions**is also periodic: from this simple ...Page 37

Characters of reducible representations of the r group using the spherical

harmonics as basic functions. ... If the

series of spherical harmonics, the first / which appears is the one corresponding

to the ...

Characters of reducible representations of the r group using the spherical

harmonics as basic functions. ... If the

**wave function**of a /"-level is expanded in aseries of spherical harmonics, the first / which appears is the one corresponding

to the ...

Page 539

First order perturbation theory shows that this is proportional to |fl"„)0l2 where //„,„

is the matrix element connecting the two states, i.e. (21) Hmo=jy>*mHlyodr,

where y>0 and y>m are the

the ...

First order perturbation theory shows that this is proportional to |fl"„)0l2 where //„,„

is the matrix element connecting the two states, i.e. (21) Hmo=jy>*mHlyodr,

where y>0 and y>m are the

**wave functions**of the initial and final states and Hl isthe ...

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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