Excitonic polarons in quasi-two-dimensional structures

Alagumalai Thilagam; Jai Singh

doi:10.1007/BF01567115

Excitonic polarons in quasi-two-dimensional structures

Alagumalai Thilagam, Jai Singh

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2 Citations (Scopus)

Abstract

A theory of excitonic polarons in semiconductor quantum wells is presented. Using a unitary transformation, we have diagonalized the exciton-phonon interaction operator in a quasi-two-dimensional system partially and then calculated the ground-state energy of an excitonic polaron. We have numerically evaluated the energy gap shift and effective mass of an excitonic polaron. We have numerically evaluated the energy gap shift and effective mass of an excitonic polaron in GaAs-Al_xGa_1-xAs systems. The results obtained here indicate that the polaronic effect is significant in the case of the light hole excitons in quantum wells of small well widths.

Original language	English
Pages (from-to)	445-450
Number of pages	6
Journal	Applied Physics A: materials science and processing
Volume	62
Issue number	5
DOIs	https://doi.org/10.1007/BF01567115
Publication status	Published - May 1996

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abstract = "A theory of excitonic polarons in semiconductor quantum wells is presented. Using a unitary transformation, we have diagonalized the exciton-phonon interaction operator in a quasi-two-dimensional system partially and then calculated the ground-state energy of an excitonic polaron. We have numerically evaluated the energy gap shift and effective mass of an excitonic polaron. We have numerically evaluated the energy gap shift and effective mass of an excitonic polaron in GaAs-AlxGa1-xAs systems. The results obtained here indicate that the polaronic effect is significant in the case of the light hole excitons in quantum wells of small well widths.",

author = "Alagumalai Thilagam and Jai Singh",

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AU - Singh, Jai

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AB - A theory of excitonic polarons in semiconductor quantum wells is presented. Using a unitary transformation, we have diagonalized the exciton-phonon interaction operator in a quasi-two-dimensional system partially and then calculated the ground-state energy of an excitonic polaron. We have numerically evaluated the energy gap shift and effective mass of an excitonic polaron. We have numerically evaluated the energy gap shift and effective mass of an excitonic polaron in GaAs-AlxGa1-xAs systems. The results obtained here indicate that the polaronic effect is significant in the case of the light hole excitons in quantum wells of small well widths.

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JO - Applied Physics A: materials science and processing

JF - Applied Physics A: materials science and processing

IS - 5

ER -

Excitonic polarons in quasi-two-dimensional structures

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