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- W2022159959 abstract "Magnetopolarons in a polar-crystal slab are studied considering electron coupling with confined LO-Phonons. The electron self-energy is calculated by using the standard perturbation theory treatment. Screening effects are included within the static Thomas-Fermi approximation. It is demonstrated that phonon confinement lowers the polaron effects. Special attention is paid to the magnetophonon resonance. Phonon dispersion is shown to be important for the interpretation of the interpretation of the pinning of the transition frequencies for high magnetic fields to values much lower than the Brillouin zone center longitudinal optical phonon frequency ω0. Auf der Basis der Wechselwirkung zwischen Elektronen und begrenzten optischen Phononen werden Magnetopolaronen in dünnen polaren Schichten untersucht. Die Elektronen-Selbstenergie wird störungstheoretisch berechnet, und Abschirmungseffekte werden im Rahmen der statischen Thomas-Fermi Näherung eingeschlossen. Es wird gezeigt, daß die Polaroneneffekte durch die Wechselwirkung mit begrenzten optischen Phononen reduziert werden. Die Berücksichtigung der Dispersion der optischen Phononen ist wichtig für die Interpretation des asymptotischen Verhaltens der Übergangs-frequenzen in starken magnetischen Feldern." @default.
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- W2022159959 date "1990-07-01" @default.
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- W2022159959 title "Magnetopolaron in a Quantum Well. LO-Phonon Confinement Effects" @default.
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