Some Aspects of Electron Lattice Interaction in Polar Crystals |
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Contents
Electronic states in a perfect crystal | 9 |
Elimination of the periodic potential | 35 |
Effective mass theory for an exciton interacting with | 64 |
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Common terms and phrases
absorption line adiabatic approximation alkali halide assume assumption band picture band structure benadering Bloch functions Bloch wave coefficients conduction band constant corresponding coth deel discussed door eerste effective mass electron lattice interaction electronen emission energy equilibrium positions excitaron exciton expression fact formula frequency given golffunctie H₁ h₁,c halide F centers Hamiltonian hand side impurity center electron introduced ions lattice vibrations limit ourselves linear matrix element mp/m obtained oscillator overgangen perfect crystal periodic potential perturbation phonon polar crystals polar lattice vibrations polaron problem probability per unit pure lattice r₁ radiation field radiationless transitions radiative transitions rooster sectie solution stationary subsection temperatures theory thesis tion transition probability unequal zero valid values variational w₁ Wannier functions wave func wave function wave vector wisselwerking wordt zeroth order zeroth order approximation zijn