Pinning-modulated non-collective Josephson-vortex motion in stacked Josephson junctions.
Josephson vortices in naturally stacked Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} tunneling junctions display rich dynamic behavior that derives from the coexistence of three basic states: static Josephson vortex lattice, coherently moving lattice, and incoherent quasiparticle tunneling state. The rich structure of hysteretic branches observed in the current-voltage characteristics can be understood as combinatorial combinations of these three states which are realized in different junctions and evolve separately with magnetic field and bias current. In particular, the multiple Josephson vortex flow branches at low-bias currents arise from the individual depinning of Josephson vortex rows in each junction.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC; Korea Science and Engineering Foundation
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 979871
- Report Number(s):
- ANL/MSD/JA-64320
- Journal Information:
- Europhy. Lett., Journal Name: Europhy. Lett. Journal Issue: 2009 Vol. 88; ISSN 0295-5075; ISSN EULEEJ
- Country of Publication:
- United States
- Language:
- ENGLISH
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