Turbulence-induced magnetic flux asymmetry at nanoscale junctions

Details Turbulence-induced magnetic flux asymmetry at nanoscale junctions Turbulence-induced magnetic flux asymmetry at nanoscale junctions

2007-05-31

arxiv.org/abs/0705.4497v2

Phys. Rev. Lett. 99, 226802 (2007)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.99.226802

It was recently predicted [J. Phys.: Condens. Matter 18, 11059 (2006)] that turbulence of the electron flow may develop at nonadiabatic nanoscale junctions under appropriate conditions. Here we show that such an effect leads to an asymmetric current-induced magnetic field on the two sides of an otherwise symmetric junction. We propose that by measuring the fluxes ensuing from these fields across two surfaces placed at the two sides of the junction would provide direct and noninvasive evidence of the transition from laminar to turbulent electron flow. The flux asymmetry is predicted to first increase, reach a maximum and then decrease with increasing current, i.e. with increasing amount of turbulence.

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