Vortex pinning by large normal particles in high-Tc superconductors
V. Zablotskii, M. Jirsa, P. Petrenko
DOI 10.1103/PhysRevB.65.224508 · Physical Review B
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Abstract
We present a model of flux pinning on large nonsuperconducting particles. It is assumed that the pins trap different numbers of vortices determined by the Poisson’s distribution function. This approach brings an additional factor into the expression for pinning force density that exponentially decays with field. The critical current density thus becomes at low fields nearly pure exponential function of magnetic field, in agreement with numerous experiments on high-Tc superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (LaSr)2CuO4 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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