corner
corner
APS » Journals » Phys. Rev. Lett. » Volume 84 » Issue 24
< Previous Article | Next Article >

Phys. Rev. Lett. 84, 5504–5507 (2000)

Quantum Transport through Ballistic Cavities: Soft vs Hard Quantum Chaos

Download: PDF (231 kB) Buy this article Export: BibTeX or EndNote (RIS)

Bodo Huckestein1,*, Roland Ketzmerick2, and Caio H. Lewenkopf3
1Institut für Theoretische Physik, Universität zu Köln, D-50937 Köln, Germany
2Max-Planck-Institut für Strömungsforschung and Institut für Nichtlineare Dynamik der Universität Göttingen, Bunsenstraße 10, D-37073 Göttingen, Germany
3Instituto de Física, Universidade do Estado do Rio de Janeiro, R. São Francisco Xavier, 524, CEP 20559-900 Rio de Janeiro, Brazil

See Also: Erratum

Received 6 August 1999; published in the issue dated 12 June 2000

We study transport through a two-dimensional billiard attached to two infinite leads by numerically calculating the Landauer conductance and the Wigner time delay. In the generic case of a mixed phase space we find a power-law distribution of resonance widths and a power-law dependence of conductance increments apparently reflecting the classical dwell time exponent, in striking difference to the case of a fully chaotic phase space. Surprisingly, these power laws appear on energy scales below the mean level spacing, in contrast to semiclassical expectations.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.5504
DOI:
10.1103/PhysRevLett.84.5504
PACS:
05.45.Mt, 05.60.Gg, 72.20.Dp, 73.23.Ad

*Present address: Institut für theoretische Physik III, Ruhr-Universität Bochum, D-44780 Bochum, Germany.

See Also

Erratum: Bodo Huckestein, Roland Ketzmerick, and Caio H. Lewenkopf, Erratum: Quantum Transport through Ballistic Cavities: Soft vs Hard Quantum Chaos [Phys. Rev. Lett. 84, 5504 (2000)], Phys. Rev. Lett. 87, 119901 (2001).

 
< Previous Article | Next Article >