Characterization of pinning and vortex motion in thin superconducting microbridges
M. Pannetier, Ph. Lecoeur, P. Bernstein, T. D. Doan, J. F. Hamet
DOI 10.1103/PhysRevB.62.15162 · Physical Review B
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Abstract
We show that transport measurements carried out with and without a low applied magnetic field enable one to characterize the vortex dynamics in high-Tc superconducting films. The application of a low magnetic field induces a modulation of the critical current that depends on the process involved when the vortices are set in motion. Current-voltage measurements with no applied field yield information on the pinning energy, the pinning sites density, and the way the vortices are moving. Measurements carried out on a set of YBa2Cu3O7 microbridges show that the vortex dynamics depend primarily on the pinning sites density. This quantity proves to be strongly dependent on the thickness of the superconducting film.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 88.8 | Pressure not reported | unknown |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 88.7 | Pressure not reported | unknown |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 88.4 | Pressure not reported | unknown |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 83.7 | Pressure not reported | unknown |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 86 | Pressure not reported | unknown |
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