6 papers
Spin Degeneracy and Conductance Fluctuations in Open Quantum Dots
J. A. Folk, S. R. Patel, K. M. Birnbaum +3
The dependence of mesoscopic conductance fluctuations on parallel magnetic field is used as a probe of spin degeneracy in open GaAs quantum dots. The variance of fluctuations at hi…
Coulomb Blockade Fluctuations in Strongly Coupled Quantum Dots
S. M. Maurer, S. R. Patel, C. M. Marcus +2
Quantum fluctuations of Coulomb blockade are investigated as a function of the coupling to reservoirs in semiconductor quantum dots. We use fluctuations in the distance between pea…
Changing the Electronic Spectrum of a Quantum Dot by Adding Electrons
S. R. Patel, D. R. Stewart, C. M. Marcus +5
The temperature dependence of Coulomb blockade peak height correlation is used to investigate how adding electrons to a quantum dot alters or "scrambles" its electronic spectrum. D…
Mesoscopic Coulomb Blockade in One-channel Quantum Dots
S. M. Cronenwett, S. M. Maurer, S. R. Patel +3
Signatures of "mesoscopic Coulomb blockade" are reported for quantum dots with one fully transmitting point-contact lead, T1 = 1, T2 << 1. Unlike Coulomb blockade (CB) in weak-tunn…
Distributions of the Conductance and its Parametric Derivatives in Quantum Dots
A. G. Huibers, S. R. Patel, C. M. Marcus +3
Full distributions of conductance through quantum dots with single-mode leads are reported for both broken and unbroken time-reversal symmetry. Distributions are nongaussian and ag…
Correlations between Ground and Excited State Spectra of a Quantum Dot
D. R. Stewart, D. Sprinzak, C. M. Marcus +2
We have studied the ground and excited state spectra of a semiconductor quantum dot for successive numbers of electron occupancy using linear and nonlinear magnetoconductance measu…