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VOLTAGE NOISE AND VORTEX STATES IN YBA2CU3OX FILMS

Authors
KIM, DH; KANG, WN; KIM, YH; PARK, JH; LEE, JJ; YI, GH; HAHN, TS; CHOI, SS
Issue Date
1995-05-10
Publisher
ELSEVIER SCIENCE BV
Citation
PHYSICA C, v.246, no.3-4, pp.235 - 240
Abstract
The voltage-noise measurements in epitaxial YBa2Cu3Ox films have been extended to the case of a high magnetic field. In a magnetic field, two noise peaks, one from the vortex motion and the other from the resistance fluctuations, were observed. The location of the vortex-motion induced peak was found to be well above the vortex-glass transition. Our interpretation is that a noise peak manifests itself in a crossover from the pinned vortex-liquid to the unpinned vortex-liquid state.
Keywords
HIGH-TC SUPERCONDUCTORS; SINGLE-CRYSTALS; RESISTIVE TRANSITION; 1/F NOISE; FLUX FLOW; Y1BA2CU3O7-X; FLUCTUATION; HIGH-TC SUPERCONDUCTORS; SINGLE-CRYSTALS; RESISTIVE TRANSITION; 1/F NOISE; FLUX FLOW; Y1BA2CU3O7-X; FLUCTUATION; high-T//c superconductors
ISSN
0921-4534
URI
https://pubs.kist.re.kr/handle/201004/145081
DOI
10.1016/0921-4534(95)00151-4
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