Cylindrical Two-Dimensional Electron Gas in a Transverse Magnetic Field

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dc.creatorFerrari, Giulio
dc.creatorBertoni, Andrea
dc.creatorGoldoni, Guido
dc.creatorMolinari, Elisa
dc.date2008-06-19
dc.date.accessioned2026-07-07T13:03:01Z
dc.date.available2026-07-07T13:03:01Z
dc.descriptionWe compute the single-particle states of a two-dimensional electron gas confined to the surface of a cylinder immersed in a magnetic field. The envelope-function equation has been solved exactly for both an homogeneous and a periodically modulated magnetic field perpendicular to the cylinder axis. The nature and energy dispersion of the quantum states reflects the interplay between different lengthscales, namely, the cylinder diameter, the magnetic length, and, possibly, the wavelength of the field modulation. We show that a transverse homogeneous magnetic field drives carrier states from a quasi-2D (cylindrical) regime to a quasi-1D regime where carriers form channels along the cylinder surface. Furthermore, a magnetic field which is periodically modulated along the cylinder axis may confine the carriers to tunnel-coupled stripes, rings or dots on the cylinder surface, depending on the ratio between the the field periodicity and the cylinder radius. Results in different regimes are traced to either incipient Landau levels formation or Aharonov-Bohm behaviour.
dc.description23 pages, 14 figures
dc.identifierhttps://arxiv.org/abs/0806.3221
dc.identifierhttp://arxiv.org/abs/0806.3221
dc.identifierPhysical Review B 79, 073410 (2009)
dc.identifierdoi:10.1103/PhysRevB.78.115326
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/226650
dc.subjectMesoscale and Nanoscale Physics
dc.titleCylindrical Two-Dimensional Electron Gas in a Transverse Magnetic Field
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