2002/03/31 by H. -S. Sim, H. Schomerus
Physics and Astronomy · #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.89.066801
published as Phys. Rev. Lett. 89, 066801 (2002) · 4 pages, 4 figures; slightly revised version accepted for publication in Physical Review Letters
arxiv created 2002/06/18 · arxiv updated 2009/11/30
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.