Abstract
In this Letter we report on lateral diffusion measurements of excitons at low temperature in double quantum wells of various widths. The structure is designed so that excitons live up to 30μs and diffuse up to 500μm. Particular attention is given to establishing that the transport occurs by exciton motion. The deduced exciton diffusion coefficients have a very strong well width dependence, and obey the same power law as the diffusion coefficient for electrons.
Original language | English (US) |
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Article number | 226401 |
Journal | Physical review letters |
Volume | 94 |
Issue number | 22 |
DOIs | |
State | Published - Jun 10 2005 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy