Depairing critical currents and self-magnetic field effects in submicron YBa2Cu3O7-delta microbridges and bicrystal junctions

Z. G. Ivanov; N. Y. Fogel; O. I. Yuzephovich; E. A. Stepantsov; A. Y. Tzalenchuk

Depairing critical currents and self-magnetic field effects in submicron YBa2Cu3O7-delta microbridges and bicrystal junctions

Z. G. Ivanov, N. Y. Fogel, O. I. Yuzephovich, E. A. Stepantsov, A. Y. Tzalenchuk

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We report on depairing critical currents in submicron YBa2Cu3O7-delta microbridges. A small-angle bicrystal grain boundary junction is used as a tool to study the entrance of vortices induced by a transport current and their influence on the I-V curves. The interplay between the depairing and the vortex motion determines a crossover in the temperature dependence of the critical current. The high entrance field of vortices in very narrow superconducting channels creates the possibility of carrying a critical current close to the depairing limit determined by the S-S-'-S nature of the small-angle grain boundary junction. (C) 2004 American Institute of Physics.

Original language	English
Pages (from-to)	203-207
Number of pages	5
Journal	Low Temperature Physics, Pts A and B
Volume	30
Issue number	3
Publication status	Published - 2004

Cite this

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title = "Depairing critical currents and self-magnetic field effects in submicron YBa2Cu3O7-delta microbridges and bicrystal junctions",

abstract = "We report on depairing critical currents in submicron YBa2Cu3O7-delta microbridges. A small-angle bicrystal grain boundary junction is used as a tool to study the entrance of vortices induced by a transport current and their influence on the I-V curves. The interplay between the depairing and the vortex motion determines a crossover in the temperature dependence of the critical current. The high entrance field of vortices in very narrow superconducting channels creates the possibility of carrying a critical current close to the depairing limit determined by the S-S-'-S nature of the small-angle grain boundary junction. (C) 2004 American Institute of Physics.",

author = "Ivanov, {Z. G.} and Fogel, {N. Y.} and Yuzephovich, {O. I.} and Stepantsov, {E. A.} and Tzalenchuk, {A. Y.}",

year = "2004",

language = "English",

volume = "30",

pages = "203--207",

journal = "Low Temperature Physics, Pts A and B",

publisher = "American Institute of Physics",

number = "3",

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TY - JOUR

T1 - Depairing critical currents and self-magnetic field effects in submicron YBa2Cu3O7-delta microbridges and bicrystal junctions

AU - Ivanov, Z. G.

AU - Fogel, N. Y.

AU - Yuzephovich, O. I.

AU - Stepantsov, E. A.

AU - Tzalenchuk, A. Y.

PY - 2004

Y1 - 2004

N2 - We report on depairing critical currents in submicron YBa2Cu3O7-delta microbridges. A small-angle bicrystal grain boundary junction is used as a tool to study the entrance of vortices induced by a transport current and their influence on the I-V curves. The interplay between the depairing and the vortex motion determines a crossover in the temperature dependence of the critical current. The high entrance field of vortices in very narrow superconducting channels creates the possibility of carrying a critical current close to the depairing limit determined by the S-S-'-S nature of the small-angle grain boundary junction. (C) 2004 American Institute of Physics.

AB - We report on depairing critical currents in submicron YBa2Cu3O7-delta microbridges. A small-angle bicrystal grain boundary junction is used as a tool to study the entrance of vortices induced by a transport current and their influence on the I-V curves. The interplay between the depairing and the vortex motion determines a crossover in the temperature dependence of the critical current. The high entrance field of vortices in very narrow superconducting channels creates the possibility of carrying a critical current close to the depairing limit determined by the S-S-'-S nature of the small-angle grain boundary junction. (C) 2004 American Institute of Physics.

M3 - Article

VL - 30

SP - 203

EP - 207

JO - Low Temperature Physics, Pts A and B

JF - Low Temperature Physics, Pts A and B

IS - 3

ER -