Green's Function Calculation of Electro‐Optical Effects in Semiconductors. I. General Formalism and Interband Transitions | Zendy

Porsch M. | Zendy

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Green's Function Calculation of Electro‐Optical Effects in Semiconductors. I. General Formalism and Interband Transitions

Author(s) -

Porsch M.

Publication year - 1968

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.19680270137

Subject(s) - physics , dielectric function , electric field , point reflection , condensed matter physics , electron , quantum mechanics , formalism (music) , dielectric , non equilibrium thermodynamics , semiconductor , quantum electrodynamics , lattice (music) , art , musical , visual arts , acoustics

A general expression for the dielectric tensor induced by a light wave in the presence of a time‐dependent external electric field is given in terms of double‐time nonequilibrium Green's functions whose spectral representations are derived in the case of a static field. Neglecting field‐induced interband transitions, the poles of the one and two‐particle Green's functions for a Bloch electron in a static electric field are determined. The imaginary part of the dielectric function at the M 0 edge is calculated for a lattice with no centres of inversion symmetry.

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