Shot Noise in Ballistic Quantum Dots with a Mixed Classical Phase Space
arXiv:cond-mat/0203091 · doi:10.1103/PhysRevLett.89.066801
Abstract
We investigate shot noise for quantum dots whose classical phase space consists of both regular and chaotic regions. The noise is systematically suppressed below the universal value of fully chaotic systems, by an amount which varies with the positions of the leads. We analyze the dynamical origin of this effect by a novel way to incorporate diffractive impurity scattering. The dependence of the shot noise on the scattering rate shows that the suppression arises due to the deterministic nature of transport through regular regions and along short chaotic trajectories. Shot noise can be used to probe phase-space structures of quantum dots with generic classical dynamics.
4 pages, 4 figures; slightly revised version accepted for publication in Physical Review Letters
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- Shot noise and transport in small quantum cavities with large openings
- Transport in chaotic quantum dots: effects of spatial symmetries which interchange the leads
- Pseudo-Path Semiclassical Approximation to Transport through Open Quantum Billiards: Dyson Equation for Diffractive Scattering
- Statistics of Transmission Eigenvalues in Two-Dimensional Quantum Cavities: Ballistic versus Stochastic Scattering
- Semiclassical transport in nearly symmetric quantum dots II: symmetry-breaking due to asymmetric leads