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Shielding by an Electron Gas in a Semiconductor in a Magnetic Field
Author(s) -
Krupski J.
Publication year - 1980
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.2221000221
Subject(s) - condensed matter physics , electron , magnetic field , semiconductor , electromagnetic shielding , anisotropy , shielding effect , degenerate energy levels , point particle , physics , coulomb , fermi gas , impurity , classical mechanics , quantum mechanics
The macroscopic static dielectric function is used to study the effect of anisotropy of the electron effective mass on the screened Coulomb potential of a point charge impurity in semiconductor in a uniform magnetic field. Formulae for both degenerate and classical statitsics are derived. It is also shown how the positions of Kohn anomalies change due to the orientation of the crystal with respect to the magnetic field.