Journal
PHYSICAL REVIEW B
Volume 86, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.86.094524
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Funding
- JST/DFG strategic Japanese-German International Cooperative Program
- German Israeli Foundation [G-967-126.14/2007]
- AFOSR
- Grants-in-Aid for Scientific Research [24510181] Funding Source: KAKEN
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We have studied experimentally and numerically temperature profiles and the formation of hot spots in intrinsic Josephson junction stacks in Bi2Sr2CaCu2O8 (BSCCO). The superconducting stacks are biased in a state where all junctions are resistive. The formation of hot spots in this system is shown to arise mainly from the strongly negative temperature coefficient of the c-axis resistivity of BSCCO at low temperatures. This leads to situations where the maximum temperature in the hot spot can be below or above the superconducting transition temperature T-c. The numerical simulations are in good agreement with the experimental observations.
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