Abstract
We consider the factors which limit electron wave coherence in open quantum dots, through a study of the reproducible fluctuations in their low temperature magneto-resistance. Our investigations indicate that at temperatures well below a degree Kelvin, electrons are able to propagate ballistically while maintaining phase coherence over very long time scales. Indeed, simple calculation reveals that electrons may undergo as many as a hundred collisions with the confining walls before coherence of their wavefunction is fully randomized.
Original language | English (US) |
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Pages (from-to) | 3968-3970 |
Number of pages | 3 |
Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |
Volume | 36 |
Issue number | 6 SUPPL. B |
DOIs | |
State | Published - Jun 1997 |
Keywords
- Collimation
- Magneto-conductance fluctuations
- Phase coherence
- Quantum chaos
- Quantum dots
- Wavefunction scarring
ASJC Scopus subject areas
- General Engineering
- General Physics and Astronomy