Shot Noise in Ballistic Quantum Dots with a Mixed Classical Phase Space

Details Shot Noise in Ballistic Quantum Dots with a Mixed Classical Phase Space Shot Noise in Ballistic Quantum Dots with a Mixed Classical Phase Space

2002-03-05

arxiv.org/abs/cond-mat/0203091v2

Phys. Rev. Lett. 89, 066801 (2002)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures; slightly revised version accepted for publication in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.89.066801

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.

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