corner
corner
APS » Journals » Phys. Rev. Lett. » Volume 78 » Issue 22
< Previous Article | Next Article >

Phys. Rev. Lett. 78, 4261–4264 (1997)

Evidence for Dipole-Dipole Hopping of GaAs Quantum Well Excitons

Download: PDF (100 kB) Buy this article Export: BibTeX or EndNote (RIS)

J. E. Golub1, S. D. Baranovskii2, and P. Thomas3
1Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
2Department of Physical Chemistry and Materials Science Center, Philipps University of Marburg, D-35032 Marburg, Germany
3Department of Physics and Materials Science Center, Philipps University of Marburg, D-35032 Marburg, Germany

Received 30 September 1996; published in the issue dated 2 June 1997

We present measurements of the energy relaxation of quasi-two-dimensional excitons in the hopping regime. Under a variety of experimental conditions, the mean energy decays in proportion to lnt. We interpret this result naturally in a model based on the dipole-dipole mechanism for energy loss hops. The model achieves semiquantitative agreement with the observed energy loss rates.

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.78.4261
DOI:
10.1103/PhysRevLett.78.4261
PACS:
71.35.Cc, 71.55.Jv, 72.20.Jv, 78.66.-w
 
< Previous Article | Next Article >