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APS » Journals » Phys. Rev. Lett. » Volume 97 » Issue 11
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Phys. Rev. Lett. 97, 116804 (2006) [4 pages]

Nanowires with Surface Disorder: Giant Localization Lengths and Quantum-to-Classical Crossover

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J. Feist1,*, A. Bäcker2, R. Ketzmerick2, S. Rotter1,3, B. Huckestein4, and J. Burgdörfer1
1Institute for Theoretical Physics, Vienna University of Technology, 1040 Vienna, Austria
2Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden, Germany
3Department of Applied Physics, Yale University, New Haven, Connecticut, 06520, USA
4Institut für Theoretische Physik III, Ruhr-Universität Bochum, 44780 Bochum, Germany

Received 20 June 2006; published 13 September 2006

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.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.97.116804
DOI:
10.1103/PhysRevLett.97.116804
PACS:
73.63.Nm, 05.45.Mt, 72.20.Dp, 73.23.Ad

*Electronic address: johannes.feist@tuwien.ac.at

 
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