Vortex dynamics in superconducting fractal networks
R. Meyer, J. L. Gavilano, B. Jeanneret, R. Théron, Ch. Leemann, H. Beck, P. Martinoli
DOI 10.1103/PhysRevLett.67.3022 · Physical Review Letters
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Abstract
Superfluid and vortex dynamics in a fractal system were investigated by measuring the complex sheet impedance of a wire network of interconnected Sierpinski gaskets exposed to a weak magnetic field. By probing the network response over a range of length scales covering four stages of hierarchy in the gaskets, we find strong evidence for unusual scaling of the vortex energy Un with the size rh of the loops, Uh∝rh−ζ with ζ=ln5/3/ln2, predicted by theory.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.718 | Pressure not reported | onset |
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