Transport resistive broadening by avalanche flux motion in high-temperature superconductors: SOC in a driven system
- Argonne National Lab., IL (United States)
Characteristics of seff -organized criticality (SOC) are investigated for a driven system in high-Tc supercorductors. By applying a bias current to a single crystal of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x}, we are able to drive the vortex state to criticality. We establish a magnetic field profile for a type-II superconductor by considering both the magnetic force (caused by the Bean critical current) and the Lorentz force (associated with the bias currrent). The resistive broadening is interpreted in the framework of SOC. We show that the R vs. T curve is divided into regions of flux flow, thermally activated flux avalanche creep.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10174758
- Report Number(s):
- ANL/MSD/PP--81187; ON: DE94016901
- Country of Publication:
- United States
- Language:
- English
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