Details
| Original language | English |
|---|---|
| Pages (from-to) | 287-294 |
| Number of pages | 8 |
| Journal | Europhysics Letters (EPL) |
| Volume | 22 |
| Issue number | 4 |
| Publication status | Published - 1 May 1993 |
| Externally published | Yes |
Abstract
The relationship between the mean energy of a two-dimensional electron gas and the first moment of their radiative recombination is investigated in the regimes of the integer and fractional quantum Hall effects. It is shown that the magnetic-field dependence of the first moment provides a method to measure the cyclotron, enhanced spin and quasi-particle energy gaps at the same time. This allows for a comparative analysis of the temperature dependence of these gaps. Upon increasing temperature an abrupt thermal collapse is observed for those energy gaps which are associated with electron-electron interactions.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Europhysics Letters (EPL), Vol. 22, No. 4, 01.05.1993, p. 287-294.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Thermal collapse of the fractional-quantum-hall-effect energy gaps
AU - Kukushkin, I. V.
AU - Pulsford, N. J.
AU - Von Klitzing, K.
AU - Haug, R. J.
AU - Ploog, K.
AU - Buhmann, H.
AU - Potemski, M.
AU - Martinez, G.
AU - Timofeev, V. B.
PY - 1993/5/1
Y1 - 1993/5/1
N2 - The relationship between the mean energy of a two-dimensional electron gas and the first moment of their radiative recombination is investigated in the regimes of the integer and fractional quantum Hall effects. It is shown that the magnetic-field dependence of the first moment provides a method to measure the cyclotron, enhanced spin and quasi-particle energy gaps at the same time. This allows for a comparative analysis of the temperature dependence of these gaps. Upon increasing temperature an abrupt thermal collapse is observed for those energy gaps which are associated with electron-electron interactions.
AB - The relationship between the mean energy of a two-dimensional electron gas and the first moment of their radiative recombination is investigated in the regimes of the integer and fractional quantum Hall effects. It is shown that the magnetic-field dependence of the first moment provides a method to measure the cyclotron, enhanced spin and quasi-particle energy gaps at the same time. This allows for a comparative analysis of the temperature dependence of these gaps. Upon increasing temperature an abrupt thermal collapse is observed for those energy gaps which are associated with electron-electron interactions.
UR - http://www.scopus.com/inward/record.url?scp=84910913491&partnerID=8YFLogxK
U2 - 10.1209/0295-5075/22/4/008
DO - 10.1209/0295-5075/22/4/008
M3 - Article
AN - SCOPUS:84910913491
VL - 22
SP - 287
EP - 294
JO - Europhysics Letters (EPL)
JF - Europhysics Letters (EPL)
SN - 0295-5075
IS - 4
ER -