Terahertz response of a two-dimensional electron gas

D. Golde, M. Kira, S. W. Koch

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

2 Scopus citations

Abstract

The terahertz response of a two-dimensional electron gas (2DEG) is investigated theoretically. The developed microscopic model shows that the terahertz absorption sensitively detects Coulomb-induced many-body correlations within the entire 2DEG system. In particular, the resulting response follows from a nontrivial competition between the ponderomotive and the Coulomb-correlation contributions. The result is in good agreement with recent experiments while the response cannot be explained with a simple Drude-model analysis..

Original languageEnglish (US)
Title of host publicationUltrafast Phenomena in Semiconductors and Nanostructure Materials XII
DOIs
StatePublished - Apr 21 2008
EventUltrafast Phenomena in Semiconductors and Nanostructure Materials XII - San Jose, CA, United States
Duration: Jan 20 2008Jan 23 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6892
ISSN (Print)0277-786X

Other

OtherUltrafast Phenomena in Semiconductors and Nanostructure Materials XII
CountryUnited States
CitySan Jose, CA
Period1/20/081/23/08

Keywords

  • Optical properties
  • Semiconductors
  • Terahertz excitation
  • Two-dimensional electron gas

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Golde, D., Kira, M., & Koch, S. W. (2008). Terahertz response of a two-dimensional electron gas. In Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII [68921F] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6892). https://doi.org/10.1117/12.761154