Polaronic Excitations In Heterostructures

V. V. Paranjape; P. V. Panat

doi:10.1117/12.940848

11 August 1987 Polaronic Excitations In Heterostructures

V. V. Paranjape, P. V. Panat

Proceedings Volume 0792, Quantum Well and Superlattice Physics; (1987) https://doi.org/10.1117/12.940848
Event: Advances in Semiconductors and Semiconductor Structures, 1987, Bay Point, FL, United States

Abstract

Das Sarma and more recently Sigg et al., have examined the effect of electronic screen-ing on the mass and ground state energy of the polaron in a GaAs-GaA1As heterostructure. These authors calculate the self-energy of the electron using the Frohlich Hamiltonian which is suitably modified to account for the screening of the electron-phonon interaction. This method for calculating the self energy is somewhat difficult being based on concepts in many body theory. An alternate method based on semiclassical theory is presented in this paper and is used to calculate the electron self-energy. This method is physically easy to interpret and is far less complex than the earlier method. In addition the method provides some improvement over the earlier calculations. Using our method we have calculated the polaron mass and ground state energy. These results are compared with the corresponding results of the earlier authors.

Citation Download Citation

V. V. Paranjape and P. V. Panat "Polaronic Excitations In Heterostructures", Proc. SPIE 0792, Quantum Well and Superlattice Physics, (11 August 1987); https://doi.org/10.1117/12.940848

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