Reference : Diffractive paths for weak localization in quantum billiards
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/10570
Diffractive paths for weak localization in quantum billiards
English
Brezinova, Iva [Technische Universität Wien = Vienna University of Technology - TU Vienna > Institute for Theoretical Physics]
Stampfer, Christoph [ETH Zurich > Solid State Physics Laboratory]
Wirtz, Ludger mailto [CNRS UMR 8520 > Institute for Electronics, Microelectronics, and Nanotechnology]
Rotter, Stefan [Yale University > Department of Applied Physics]
Burgdörfer, Joachim [Technische Universität Wien = Vienna University of Technology - TU Vienna > Institute for Theoretical Physics]
2008
Physical Review B
77
16
Yes (verified by ORBilu)
International
1098-0121
[en] We study the weak-localization effect in quantum transport through a clean ballistic cavity with regular classical dynamics. We address the question which paths account for the suppression of conductance through a system where disorder and chaos are absent. By exploiting both quantum and semiclassical methods, we unambiguously identify paths that are diffractively backscattered into the cavity (when approaching the lead mouths from the cavity interior) to play a key role. Diffractive scattering couples transmitted and reflected paths and is thus essential to reproduce the weak-localization peak in reflection and the corresponding antipeak in transmission. A comparison of semiclassical calculations featuring these diffractive paths yields good agreement with full quantum calculations and experimental data. Our theory provides system-specific predictions for the quantum regime of few open lead modes and can be expected to be relevant also for mixed as well as chaotic systems.
http://hdl.handle.net/10993/10570
10.1103/PhysRevB.77.165321

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
PhysRevB.77.165321.pdfPublisher postprint231.16 kBView/Open

Bookmark and Share SFX Query

All documents in ORBilu are protected by a user license.