Hofstadter butterflies in a modulated magnetic field: Superconducting wire network with magnetic decoration
Yasuhiro Iye, Eiichi Kuramochi, Masahiro Hara, Akira Endo, Shingo Katsumoto
DOI 10.1103/PhysRevB.70.144524 · Physical Review B
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Abstract
Hofstadter butterfly spectra of tight-binding electron systems under spacially modulated magnetic fields are calculated. The dependence of the spectrum on the symmetry and strength of the spatially varying magnetic field is elucidated. The Little-Parks oscillation of the superconducting network under a spatially modulated magnetic field produced by decoration with mesoscopic magnetic structure exhibits behavior reproducing the edge of the corresponding Hofstadter spectra.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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