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 | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 6892 |
| DOIs | |
| State | Published - 2008 |
| Externally published | Yes |
| Event | Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII - San Jose, CA, United States Duration: Jan 20 2008 → Jan 23 2008 |
Other
| Other | Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII |
|---|---|
| Country | United States |
| City | San Jose, CA |
| Period | 1/20/08 → 1/23/08 |
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Keywords
- Optical properties
- Semiconductors
- Terahertz excitation
- Two-dimensional electron gas
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
Terahertz response of a two-dimensional electron gas. / Golde, D.; Kira, M.; Koch, Stephan W.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6892 2008. 68921F.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Terahertz response of a two-dimensional electron gas
AU - Golde, D.
AU - Kira, M.
AU - Koch, Stephan W
PY - 2008
Y1 - 2008
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..
KW - Optical properties
KW - Semiconductors
KW - Terahertz excitation
KW - Two-dimensional electron gas
UR - http://www.scopus.com/inward/record.url?scp=42149098336&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=42149098336&partnerID=8YFLogxK
U2 - 10.1117/12.761154
DO - 10.1117/12.761154
M3 - Conference contribution
AN - SCOPUS:42149098336
SN - 9780819470676
VL - 6892
BT - Proceedings of SPIE - The International Society for Optical Engineering
ER -