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Persistent currents due to point obstacles
- 1.0185715 - 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
Number of the records: 1