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.
Original languageUndefined/Unknown
JournalPhysical Review Letters
Issue number20
Pages (from-to)2066802
Number of pages4
Publication statusPublished - 3 Aug 2000

    Research areas

  • cond-mat.mes-hall, cond-mat.stat-mech

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