Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2005-02-17
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.
Aigner Florian
Burgdörfer Joachim
Rotter Stefan
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