TY - JOUR
T1 - Percolative transition and scaling of transport E-J characteristics in YBCO coated IBAD tape
AU - Kiss, T.
AU - Inoue, M.
AU - Egashira, S.
AU - Kuga, T.
AU - Ishimaru, M.
AU - Takeo, M.
AU - Matsushita, T.
AU - Iijima, Y.
AU - Kakimoto, K.
AU - Saitoh, T.
AU - Awaji, S.
AU - Watanabe, K.
AU - Shiohara, Y.
N1 - Funding Information:
Manuscript received August 5, 2002. This work was supported in part by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications. T. Kiss, M. Inoue, S. Egashira, T. Kuga, M. Ishimaru, and M. Takeo are with Kyushu University, Fukuoka 812-8581, Japan (e-mail: kiss@sc.kyushu-u.ac.jp). T. Matsushita is with Kyushu Institute of Technology, Iizuka, Japan. Y. Iijima, K. Kakimoto, and T. Saitoh are with Fujikura Ltd., Tokyo, Japan. S. Awaji and K. Watanabe are with Tohoku University, Sendai, Japan. Y. Shiohara is with Superconductivity Research Laboratory, Tokyo, Japan. Digital Object Identifier 10.1109/TASC.2003.811906 Fig. 1. The maximum size of depinned clusters obtained by a Monte-Carlo study on a random pin medium. The biased current density J is (a) J < J , (b) J = J , and (c) J > J , where J is the percolation threshold.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2003/6
Y1 - 2003/6
N2 - We have investigated extended electric field-vs.-current density E-J characteristics in YBCO coated IBAD tapes. The results of a Monte-Carlo study on the depinning in a random pin medium were compared with measurements. Using a low temperature scanning laser microscope, we examined the percolative behavior of the local resistive transition in the YBCO tape. It was also shown that the depinning probability, which is proportional to the dynamic resistance of the E-J curves, is scaled as a function of reduced current density with the aid of a power index. Consequently, the E-J characteristics in the tapes can be described by the combination of the two kinds of scaling laws: one is the scaling law of the depinning probability predicted in a random network and the other is the scaling law for the flux pinning force. These properties agree well with the percolation model of depinned clusters.
AB - We have investigated extended electric field-vs.-current density E-J characteristics in YBCO coated IBAD tapes. The results of a Monte-Carlo study on the depinning in a random pin medium were compared with measurements. Using a low temperature scanning laser microscope, we examined the percolative behavior of the local resistive transition in the YBCO tape. It was also shown that the depinning probability, which is proportional to the dynamic resistance of the E-J curves, is scaled as a function of reduced current density with the aid of a power index. Consequently, the E-J characteristics in the tapes can be described by the combination of the two kinds of scaling laws: one is the scaling law of the depinning probability predicted in a random network and the other is the scaling law for the flux pinning force. These properties agree well with the percolation model of depinned clusters.
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U2 - 10.1109/TASC.2003.811906
DO - 10.1109/TASC.2003.811906
M3 - Conference article
AN - SCOPUS:0042476424
SN - 1051-8223
VL - 13
SP - 2607
EP - 2610
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 2 III
T2 - 2002 Applied Superconductivity Conference
Y2 - 4 August 2002 through 9 August 2002
ER -