Many-body effects on bandgap shrinkage, effective masses and alpha factor

Jian Zhong Li, Cun-Zheng Ning

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Many-body Coulomb effects influence the operation of quantum-well (QW) laser diode (LD) strongly. In the present work, we study a two-band electron-hole plasma (EHP) within the Hatree-Fock approximation and the single plasmon pole approximation for static screening. Full inclusion of momentum dependence in the many-body effects is considered. An empirical expression for carrier density dependence of the bandgap renormalization (BGR) in an 8 nm GaAs/Al 0.3Ga 0.7As single QW will be given, which demonstrates a non-universal scaling behavior for quasi-two-dimension structures, due to size-dependent efficiency of screening. In addition, effective mass renormalization (EMR) due to momentum-dependent self-energy many-body correction, for both electrons and holes, is studied and serves as another manifestation of the many-body effects. Finally, the effects on carrier density dependence of the alpha factor is evaluated to assess the sensitivity of the full inclusion of momentum dependence.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Volume3944
StatePublished - 2000
Externally publishedYes
EventPhysics and Simulation of Optoelectronic Devices VIII - San Jose, CA, USA
Duration: Jan 24 2000Jan 28 2000

Other

OtherPhysics and Simulation of Optoelectronic Devices VIII
CitySan Jose, CA, USA
Period1/24/001/28/00

Fingerprint

shrinkage
Momentum
Energy gap
Carrier concentration
Screening
momentum
Quantum well lasers
screening
Electrons
inclusions
Semiconductor quantum wells
Semiconductor lasers
Poles
quantum well lasers
approximation
Plasmas
poles
semiconductor lasers
quantum wells
scaling

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Li, J. Z., & Ning, C-Z. (2000). Many-body effects on bandgap shrinkage, effective masses and alpha factor. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3944). Society of Photo-Optical Instrumentation Engineers.

Many-body effects on bandgap shrinkage, effective masses and alpha factor. / Li, Jian Zhong; Ning, Cun-Zheng.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3944 Society of Photo-Optical Instrumentation Engineers, 2000.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Li, JZ & Ning, C-Z 2000, Many-body effects on bandgap shrinkage, effective masses and alpha factor. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3944, Society of Photo-Optical Instrumentation Engineers, Physics and Simulation of Optoelectronic Devices VIII, San Jose, CA, USA, 1/24/00.
Li JZ, Ning C-Z. Many-body effects on bandgap shrinkage, effective masses and alpha factor. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3944. Society of Photo-Optical Instrumentation Engineers. 2000
Li, Jian Zhong ; Ning, Cun-Zheng. / Many-body effects on bandgap shrinkage, effective masses and alpha factor. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3944 Society of Photo-Optical Instrumentation Engineers, 2000.
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