Comment on ``Topological Oscillations of the Magnetoconductance in Disordered GaAs Layers''

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In a recent Letter, Murzin et. al. [Phys. Rev. Lett., vol. 92, 016802 (2004)] investigated "instanton effects" in the magneto resistance data taken from samples with heavily Si-doped GaAs layers at low temperatures. This topological issue originally arose in the development of a microscopic theory of quantum Hall effect some 20 years ago. The investigations by Murzin et. al., however, do not convey the correct ideas on scaling that have emerged over the years in the general theory of quantum transport.
comment on Phys. Rev. Lett., vol. 92, 016802 (2004)

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Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/95779

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0504763
 http://arxiv.org/abs/cond-mat/0504763
 Phys. Rev. Lett. 95, 189701 (2005)
 doi:10.1103/PhysRevLett.95.189701

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