Transport resistive broadening by avalanche flux motion in high-temperature superconductors: SOC in a driven system

Technical Report · Fri Oct 01 00:00:00 EDT 1993

DOI:https://doi.org/10.2172/10174758· OSTI ID:10174758

Wang, Zuning ^[1]; Shi, Donglu ^[1]

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1. 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. (ANL), Argonne, 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
• Resource Relation: Other Information: PBD: Oct 1993
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
MAGNETIC FLUX
BISMUTH OXIDES
STRONTIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
MONOCRYSTALS
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