Experimental evidence of a fractal dissipative regime in high-Tc superconductors (CROSBI ID 86765)
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Podaci o odgovornosti
Prester, Mladen
engleski
Experimental evidence of a fractal dissipative regime in high-Tc superconductors
We report on our experimental evidence of a substantial geometrical ingredient characterizing the problem of incipient dissipation in high-Tc superconductors (HTS’s): high-resolution studies of differential resistance-current characteristics in the absence of magnetic field enabled us to identify and quantify the fractal dissipative regime inside which the actual current-carrying medium is an object of fractal geometry. The discovery of a fractal regime proves the reality and consistency of a critical-phenomena scenario as a model for dissipation in inhomogeneous and disordered HTS’s, gives the experimentally based value of the relevant finite-size scaling exponent, and offers some interesting new guidelines to the problem of pairing mechanisms in HTS’s.
dissipation ; high-Tc superconductors ; fractals
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Podaci o izdanju
60 (5)
1999.
3100-3103
objavljeno
1098-0121
1550-235X
10.1103/PhysRevB.60.3100