Large polaron in an asymmetrical rectangular quantum well | Zendy

Bibik A. I. | Zendy; Gerlach B. | Zendy; Smondyrev M. A. | Zendy

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Large polaron in an asymmetrical rectangular quantum well

Author(s) -

Bibik A. I.,

Gerlach B.,

Smondyrev M. A.

Publication year - 2003

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.200301793

Subject(s) - polaron , effective mass (spring–mass system) , ground state , physics , wave function , electron , condensed matter physics , function (biology) , quantum , quantum mechanics , evolutionary biology , biology

The polaron energy and the effective mass are calculated for an electron confined in an asymmetrical finite quantum well constructed of Al x l Ga 1– x As/GaAs/Al x r Ga 1– x r As layers. To simplify the study we suggest a model in which parameters of a medium are averaged over the ground‐state wave function. Our model reproduces the correct three‐dimensional asymptotics at both small and large widths. We obtained a rather monotonous behavior of the polaron energy as a function of the confining potential width and found a peak of the effective mass. A comparison with theoretical results by other authors is made.

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