Decoherence in Nearly-Isolated Quantum Dots
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Decoherence in nearly-isolated GaAs quantum dots is investigated using the change in average Coulomb blockade peak height upon breaking time-reversal symmetry. The normalized change in average peak height approaches the predicted universal value of 1/4 at temperatures well below the single-particle level spacing, but is greatly suppressed for temperature greater than the level spacing, suggesting that inelastic scattering or other dephasing mechanisms dominate in this regime.
Originalsprog | Udefineret/Ukendt |
---|---|
Tidsskrift | Physical Review Letters |
Vol/bind | 87 |
Udgave nummer | 20 |
Sider (fra-til) | 2066802 |
Antal sider | 4 |
ISSN | 0031-9007 |
DOI | |
Status | Udgivet - 3 aug. 2000 |
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