Regensburg 2004 – wissenschaftliches Programm

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SYSN: Quantum Shot Noise in Nanostructures

SYSN 1: Quantum Shot Noise in Nanostructures

SYSN 1.5: Vortrag

Montag, 8. März 2004, 15:15–15:30, H1

Suppression of shot noise by dynamical mechanisms — •Henning Schomerus — MPIPKS Dresden, Nöthnitzer Str. 38, 01187 Dresden

The investigation of shot noise in mesoscopic systems has many merits, one of the primary ones being the detection of system-specific details that help to uncover dynamics and interactions. We identify three dynamical mechanisms that reduce shot noise in ballistic quantum dots below the universal prediction of random-matrix theory: a) direct processes, b) dynamics along stable trajectories, and c) delay of diffraction for very small wavelength. Mechanisms a) and b) are efficient means in the quest to suppress shot noise in phase-coherent systems, while mechanism c) elucidates the particle-wave duality and the correspondence principle in the quantum-to-classical crossover.
[1] H.-S. Sim and H. Schomerus, Phys. Rev. Lett. 89, 066801 (2002).
[2] R. G. Nazmitdinov, H.-S. Sim, H. Schomerus, and I. Rotter, Phys. Rev. B 66, 241302(R) (2002).
[3] J. Tworzydlo, A. Tajic, H. Schomerus, and C. W. J. Beenakker, Phys. Rev. B 68, 115313 (2003).