Conductance Fluctuations and Spin Symmetries in Quantum Dots
D. M. Zumbuhl, J. B. Miller, D. Goldhaber-Gordon, C. M. Marcus, J. S. Harris,, K. Campman, A. C. Gossard
Abstract
Conductance fluctuations in GaAs quantum dots with spin-orbit and Zeeman coupling are investigated experimentally and compared to a random matrix theory formulation that defines a number of regimes of spin symmetry depending on experimental parameters. Accounting for orbital coupling of the in-plane magnetic field, which can break time-reversal symmetry, yields excellent overall agreement between experiment and theory.
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