dorsal/arxiv
View SchemaPersistent currents due to point obstacles
| Authors | Taksu Cheon, Pavel Exner |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0202147 |
| URL | https://arxiv.org/abs/quant-ph/0202147 |
| DOI | 10.1016/S0375-9601(02)01719-X |
| Journal | Physics Letters A307 (2003) 209-214 |
Abstract
We discuss properties of the two-dimensional Landau Hamiltonian perturbed by a 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.
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"abstract": "We discuss properties of the two-dimensional Landau Hamiltonian perturbed by\na family of identical $\\delta$ potentials arranged equidistantly along a closed\nloop. It is demonstrated that for the loop size exceeding the effective size of\nthe point obstacles and the cyclotronic radius such a system exhibits\npersistent currents at the bottom of the spectrum. We also show that the effect\nis sensitive to a small disorder.",
"arxiv_id": "quant-ph/0202147",
"authors": [
"Taksu Cheon",
"Pavel Exner"
],
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"quant-ph",
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"doi": "10.1016/S0375-9601(02)01719-X",
"journal_ref": "Physics Letters A307 (2003) 209-214",
"title": "Persistent currents due to point obstacles",
"url": "https://arxiv.org/abs/quant-ph/0202147"
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