Excitons in InP quantum dots

Journal Article · Mon Jun 01 00:00:00 EDT 1998 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.57.R15064· OSTI ID:636177

Fu, H; Zunger, A ^[1]

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1. National Renewable Energy Laboratory, Golden, Colorado 80401 (United States)

The excitonic spectrum of InP quantum dots is investigated using an atomistic pseudopotential approach for the single-particle problem and a state-dependent screened Coulomb interaction for the many-body problem. Our calculations show a different energy distribution of single-particle states relative to the commonly used {bold k{center_dot}p} theory as well as significant parity mixing in the envelope functions, forbidden in 6{times}6 {bold k}{center_dot}{bold p}. The calculated excitonic spectrum, including seven excitons, explains well the recent experimental measurements. {copyright} {ital 1998} {ital The American Physical Society}

• Research Organization: National Renewable Energy Lab. (NREL), Golden, CO (United States)
• DOE Contract Number: AC36-83CH10093
• OSTI ID: 636177
• Journal Information: Physical Review, B: Condensed Matter, Vol. 57, Issue 24; Other Information: PBD: Jun 1998
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
EXCITONS
INDIUM PHOSPHIDES
MANY-BODY PROBLEM
COULOMB FIELD
SPECTRA