Phonon renormalization effects in photoexcited quantum wires
Date
1995
Authors
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Source Title
Physical Review B
Print ISSN
0163-1829
Electronic ISSN
Publisher
American Physical Society
Volume
51
Issue
3
Pages
1784 - 1790
Language
English
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Abstract
We study the effects of screening on polaronic corrections to the effective band edge in a quasi-one-dimensional GaAs quantum wire. We find that the screening effects and finite well width considerably reduce the polaron energy and oppose the polaronic band-gap renormalization. We calculate the polaronic effective mass as a function of the carrier density and temperature. Effects of the vertex corrections to the conduction- and valence-band edges are also discussed. © 1995 The American Physical Society.