Aharonov-Bohm cages in two-dimensional structures

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We present an extreme localization mechanism induced by a magnetic field for tight-binding electrons in two-dimensional structures. This spectacular phenomenon is investigated for a large class of tilings (periodic, quasiperiodic, or random). We are led to introduce the Aharonov-Bohm cages defined as the set of sites eventually visited by a wavepacket that can, for particular values of the magnetic flux, be bounded. We finally discuss the quantum dynamics which exhibits an original pulsating behaviour.
4 pages Latex, 3 eps figures, 1 ps figure

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Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/99363

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9806068
 http://arxiv.org/abs/cond-mat/9806068
 Phys. Rev. Lett. 81, 5888 (1998)
 doi:10.1103/PhysRevLett.81.5888

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arXiv