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Persistent currents due to point obstacles

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    0185715 - UJF-V 20033014 RIV NL eng J - Journal Article
    Cheon, T. - Exner, Pavel
    Persistent currents due to point obstacles.
    Physics Letters. A. Roč. 307, č. 4 (2003), s. 209-214. ISSN 0375-9601. E-ISSN 1873-2429
    R&D Projects: GA AV ČR IAA1048101
    Institutional research plan: CEZ:AV0Z1048901
    Keywords : persistent currents * impurity * Landau levels
    Subject RIV: BE - Theoretical Physics
    Impact factor: 1.324, year: 2003

    We discuss properties of the two-dimensional Landau Hamiltonian perturbed by 4 family of identical delta potentials arranged equidistantly along a closed loop. It is demonstrated that for the loop size exceeding the effective size of the point obstacles and. the cyclotronic radius such a system exhibits persistent currents at the bottom of the spectrum. We also show that the effect is sensitive to a small disorder.
    Permanent Link: http://hdl.handle.net/11104/0082098

     
     

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