Nanowires with surface disorder: giant localization lengths and quantum-to-classical crossover.
We investigate electronic quantum transport through nanowires with one-sided surface roughness. A magnetic field perpendicular to the scattering region is shown to lead to exponentially diverging localization lengths in the quantum-to-classical crossover regime. This effect can be quantitatively accounted for by tunneling between the regular and the chaotic components of the underlying mixed classical phase space.
Feist
J
J
Institute for Theoretical Physics, Vienna University of Technology, 1040 Vienna, Austria. johannes.feist@tuwien.ac.at
Bäcker
A
A
Ketzmerick
R
R
Rotter
S
S
Huckestein
B
B
Burgdörfer
J
J