Mechanism of the c-axis dissipation in Bi2Sr2CaCu2O8-x single crystals
SCIE
SCOPUS
- Title
- Mechanism of the c-axis dissipation in Bi2Sr2CaCu2O8-x single crystals
- Authors
- Chung, MY; Chang, HS; Doh, YJ; Lee, HJ
- Date Issued
- 1997-09
- Publisher
- KOREAN PHYSICAL SOC
- Abstract
- We have measured resistivities both in the ab-plane and dong the c-axis on Bi2Sr2CaCu2O8-x single crystals in magnetic fields oriented parallel to the c-axis. Both the ab-plane and the c-axis magnetoresistivities at low temperatures are described by the thermally activated flux creep model with the same value of the thermal activation energy, which scales with H-0.3+/-0.1. We also found a narrow temperature region where the ratio of the c-axis to the ab-plane conductivity in the mixed state exhibits a negative slope with temperature, as predicted by the Koshelev model. In this temperature regime, the c-axis dissipation is presumably due to the phase slips between the Cu-O bilayers caused by the diffusive motion of the pancake vortices in different layers.
- Keywords
- HIGH-TEMPERATURE SUPERCONDUCTORS; MUON SPIN ROTATION; DIMENSIONAL CROSSOVER; THERMAL FLUCTUATIONS; TRANSPORT-PROPERTIES; MAGNETIC-FIELD; MIXED STATE; BI2.15SR1.85CACU2O8+DELTA; CONDUCTIVITY; TRANSITIONS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/21231
- ISSN
- 0374-4884
- Article Type
- Article
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 31, no. 3, page. 384 - 388, 1997-09
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