Flux avalanches in superconducting films with periodic arrays of holes.
The magnetic flux dynamics in Nb films with periodic hole arrays is studied magneto-optically. Flux motion in the shape of microavalanches along {l_brace}100{r_brace} and {l_brace}110{r_brace} directions of the hole lattice is observed. At lower temperatures anisotropic large scale thermo-magnetic avalanches dominate flux entry and exit. At T-T{sub c} critical-state-like field patterns periodically appear at fractions of the matching field.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 943282
- Report Number(s):
- ANL/MSD/JA-38834; PHYCE6; TRN: US200916%%633
- Journal Information:
- Physica C, Vol. 341-348, Issue 2000; ISSN 0921-4534
- Country of Publication:
- United States
- Language:
- ENGLISH
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