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Published on: May 30, 2014
Shot noise in the chaotic-to-regular crossover regime
Florian Aigner1, Stefan Rotter, Joachim Burgdörfer
1Institute for Theoretical Physics, Vienna University of Technology, A-1040 Vienna, Austria.
Abstract:
We investigate the shot noise for phase-coherent quantum transport in the chaotic-to-regular crossover regime. Employing the modular recursive Green's function method for both ballistic and disordered two-dimensional cavities, we find the Fano factor and the transmission eigenvalue distribution for regular systems to be surprisingly similar to those for chaotic systems. We argue that, in the case of regular dynamics in the cavity, diffraction at the lead openings is the dominant source of shot noise. We also explore the onset of the crossover from quantum-to-classical transport and develop a quasiclassical transport model for shot noise suppression which agrees with the numerical quantum data.
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