Stark shifts of excitonic complexes in quantum wells

Thilagam Lohe

doi:10.1103/PhysRevB.56.4665

Stark shifts of excitonic complexes in quantum wells

Thilagam Lohe

Research output: Contribution to journal › Comment/debate

Abstract

We utilize a nonvariational ansatz as the perturbative term to study the quadratic Stark effect of hydrogenic systems in a fractional-dimensional space. Applying a Dalgarno-Lewis-type technique, the ansatz is used to derive an analytical expression for the Stark shifts in quantum wells. Estimates of the energy shifts of negatively charged excitons are in good agreement with recent experimental results, and provide qualitative explanations for their behavior in a weak external electric field. The model is extended to study the Stark shifts of positively charged excitons and biexcitons in quantum wells.

Original language	English
Pages (from-to)	4665-4670
Number of pages	6
Journal	Physical Review B (Condensed Matter and Materials Physics)
Volume	56
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.56.4665
Publication status	Published - 1997

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10.1103/PhysRevB.56.4665

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title = "Stark shifts of excitonic complexes in quantum wells",

abstract = "We utilize a nonvariational ansatz as the perturbative term to study the quadratic Stark effect of hydrogenic systems in a fractional-dimensional space. Applying a Dalgarno-Lewis-type technique, the ansatz is used to derive an analytical expression for the Stark shifts in quantum wells. Estimates of the energy shifts of negatively charged excitons are in good agreement with recent experimental results, and provide qualitative explanations for their behavior in a weak external electric field. The model is extended to study the Stark shifts of positively charged excitons and biexcitons in quantum wells.",

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PY - 1997

Y1 - 1997

N2 - We utilize a nonvariational ansatz as the perturbative term to study the quadratic Stark effect of hydrogenic systems in a fractional-dimensional space. Applying a Dalgarno-Lewis-type technique, the ansatz is used to derive an analytical expression for the Stark shifts in quantum wells. Estimates of the energy shifts of negatively charged excitons are in good agreement with recent experimental results, and provide qualitative explanations for their behavior in a weak external electric field. The model is extended to study the Stark shifts of positively charged excitons and biexcitons in quantum wells.

AB - We utilize a nonvariational ansatz as the perturbative term to study the quadratic Stark effect of hydrogenic systems in a fractional-dimensional space. Applying a Dalgarno-Lewis-type technique, the ansatz is used to derive an analytical expression for the Stark shifts in quantum wells. Estimates of the energy shifts of negatively charged excitons are in good agreement with recent experimental results, and provide qualitative explanations for their behavior in a weak external electric field. The model is extended to study the Stark shifts of positively charged excitons and biexcitons in quantum wells.

U2 - 10.1103/PhysRevB.56.4665

DO - 10.1103/PhysRevB.56.4665

M3 - Comment/debate

SN - 0163-1829

VL - 56

SP - 4665

EP - 4670

JO - Physical Review B (Condensed Matter and Materials Physics)

JF - Physical Review B (Condensed Matter and Materials Physics)

IS - 8

ER -

Stark shifts of excitonic complexes in quantum wells

Abstract

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