Shot noise in the chaotic-to-regular crossover regime

Details Shot noise in the chaotic-to-regular crossover regime Shot noise in the chaotic-to-regular crossover regime

2005-02-17

arxiv.org/abs/cond-mat/0502417v1

Phys. Rev. Lett. 94, 216801 (2005).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures, submitted to Phys.Rev.Lett

Scientific paper

10.1103/PhysRevLett.94.216801

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 quasi-classical transport model for shot noise suppression which agrees with the numerical quantum data.

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