Terahertz response of a two-dimensional electron gas

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

doi:10.1117/12.761154

Terahertz response of a two-dimensional electron gas

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

Optical Sciences, College of

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English (US)
Title of host publication	Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII
DOIs	https://doi.org/10.1117/12.761154
State	Published - Apr 21 2008
Event	Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII - San Jose, CA, United States Duration: Jan 20 2008 → Jan 23 2008

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6892
ISSN (Print)	0277-786X

Other

Other	Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII
Country	United States
City	San Jose, CA
Period	1/20/08 → 1/23/08

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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10.1117/12.761154

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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

Golde, D, Kira, M & Koch, SW 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, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII, San Jose, CA, United States, 1/20/08. https://doi.org/10.1117/12.761154

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N2 - 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..

AB - 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..

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