Nonlinear Effects on Quantum Interference in Electron Billiards

Details Nonlinear Effects on Quantum Interference in Electron Billiards Nonlinear Effects on Quantum Interference in Electron Billiards

2005-12-06

arxiv.org/abs/cond-mat/0512132v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures, To be published in a special issue of the Springer Proceedings in Physics Series as part of the proceeding

Scientific paper

Magnetoconductance fluctuations are used to study the effect of an applied bias on an electron billiard. At lower bias, nonlinear effects can be well described by electron heating alone, while at higher bias (V > 2mV, ~5% of the electron Fermi energy) non-equilibrium effects become significant. At high bias, we also observe that the spectral content of the MCF is sensitive to the nonequilibrium effects. Spectral behavior is consistent with a fractal scaling of the conductance fluctuations with magnetic field, resulting in the first observation of fractal conductance fluctuations outside of the linear regime of transport.

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