Current Distribution in Y-Ba-Cu-O Superconducting Microbridges Containing Π-Shaped Channel for Easy Vortex Motion

• Authors: J. Sulcas , L. Steponaviciene , A. Jukna , G. Jung , V. Plausinaitiene , A. Abrutis , M. Gong , R. Sobolewski
• Languages of publication: EN

Abstracts

EN

A mixed state in dc-biased thin films of II-type superconductors realizes the Abrikosov magnetic vortices/antivortices, which are the result of the current-self magnetic field penetration into the film at temperatures lower than its critical temperature T_{c}. A nucleation of vortices/antivortices at the superconducting film's edges, their motion perpendicular to the direction of biasing current, and the annihilation in the film's center originates from a current dissipation in the superconductor and expresses itself in experiments as a dc voltage. This work reports on the results of simulation of current density in a 50 μm wide, 100 μm long, and 0.3 μm thick YBa_2Cu_3O_{7 - x} microbridges containing Π-shaped 5 μm wide single channel of easy vortex motion fabricated by means of laser-writing technique. Analyzing a two-dimensional-net of resistors and assuming that, due to the Meissner-Ochsenfeld effect, the magnetic flux penetration into superconducting film is nonlinear, we demonstrate that presence of a Π-shaped channel causes a non-homogeneous distribution of current in the microbridge.

Keywords

EN

74.78.-w; 74.25.Sv; 74.25.F-; 74.25.Wx

Discipline

• 74.78.-w: Superconducting films and low-dimensional structures
• 74.25.Wx: Vortex pinning (includes mechanisms and flux creep)
• 74.25.F-: Transport properties
• 74.25.Sv: Critical currents

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 119
• Issue: 2
• Pages: 183-185

Dates

published

2011-02

Contributors

author

J. Sulcas

• Joint Stock Company "Etronika", LT-09132 Vilnius, Lithuania

author

L. Steponaviciene

• Department of Physics, Vilnius Gediminas Technical University, LT-10223 Vilnius, Lithuania

author

A. Jukna

• Department of Physics, Vilnius Gediminas Technical University, LT-10223 Vilnius, Lithuania

author

G. Jung

• Department of Physics, Ben-Gurion University of the Negev, 84105 Beer-Sheva, Israel

author

V. Plausinaitiene

• Department of General and Inorganic Chemistry, Vilnius University, LT-03225 Vilnius, Lithuania

author

A. Abrutis

• Department of General and Inorganic Chemistry, Vilnius University, LT-03225 Vilnius, Lithuania

author

M. Gong

• Department of Electrical and Computer Engineering and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627-0231, USA

author

R. Sobolewski

• Department of Electrical and Computer Engineering and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627-0231, USA

References

• 1. A.A. Abrikosov, Sov. Phys.-JETP 5, 1174 (1957)
• 2. K. Matsumoto, P. Mele, A. Ichinose, M. Mukaida, Y. Yoshida, S. Horii, R. Kita, IEEE Trans. Appl. Supercond. 19, 3248 (2009)
• 3. J.-Y. Lin, M. Gurvitch, S.K. Tolpygo, A. Boudillon, S.Y. Hou, J.M. Phylips, Phys. Rev. B 54, R12717 (1996)
• 4. P. Martinoli, Phys. Rev. B 17, 1175 (1978)
• 5. Y. Yuzhelevski, G. Jung, C. Camerlingo, M. Russo, M. Ghinovker, B.Ya. Shapiro, Phys. Rev. B 60, 9726 (1999)
• 6. A. Jukna, I. Barboy, G. Jung, S.S. Barnerjee, Y. Myasoedov, V. Plausinaitiene, A. Abrutis, X. Li, D. Wang, R. Sobolewski, Appl. Phys. Lett. 87, 192504 (2005)
• 7. A. Jukna, I. Barboy, G. Jung, A. Abrutis, X. Li, D. Wang, R. Sobolewski, J. Appl. Phys. 99, 113902 (2006)
• 8. A.A. Lykov, Sov. Phys.-Usp. 35, 811 (1992)
• 9. A. Jukna, I. Barboy, G. Jung, A. Abrutis, X. Li, D. Wang, R. Sobolewski, Acta Phys. Pol. A 113, 959 (2008)
• 10. E. Zeldov, J.R. Clem, M. McElfresh, M. Darwin, Phys. Rev. B 49, 9802 (1994)
• 11. E.H. Brandt, M. Indenbom, Phys. Rev. B 48, 12893 (1993)

Identifiers

DOI

10.12693/APhysPolA.119.183