Driven motion of vortices in superconductors

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The driven motion of vortices in the solid vortex state is analyzed with the time-dependent Ginzburg-Landau equations. In large-scale numerical simulations, carried out on the IBM Scalable POWERparallel (SP) system at Argonne National Laboratory, many hundreds of vortices are followed as they move under the influence of a Lorentz force induced by a transport current in the presence of a planar defect (similar to a twin boundary in YBa{sub 2}CU{sub 3}O{sub 7}). Correlations in the positions and velocities of the vortices in plastic and elastic motion are identified and compared. Two types of plastic motion are observed. Organized plastic motion ... continued below

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14 p.

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Crabtree, G.W.; Leaf, G.K.; Kaper, H.G.; Vinokur, V.M.; Koshelev, A.E.; Braun, D.W. et al. September 1, 1995.

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The driven motion of vortices in the solid vortex state is analyzed with the time-dependent Ginzburg-Landau equations. In large-scale numerical simulations, carried out on the IBM Scalable POWERparallel (SP) system at Argonne National Laboratory, many hundreds of vortices are followed as they move under the influence of a Lorentz force induced by a transport current in the presence of a planar defect (similar to a twin boundary in YBa{sub 2}CU{sub 3}O{sub 7}). Correlations in the positions and velocities of the vortices in plastic and elastic motion are identified and compared. Two types of plastic motion are observed. Organized plastic motion displaying long-range orientational correlation and shorter-range velocity correlation occurs when the driving forces are small compared to the pinning forces in the twin boundary. Disorganized plastic motion displaying no significant correlation in either the velocities or orientation of the vortex system occurs when the driving and pinning forces axe of the same order.

Physical Description

14 p.

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INIS; OSTI as DE96007207

Source

  • 1. Polish-US conference on high temperature superconductivity, Wroclaw (Poland), 11-15 Sep 1995

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  • Other: DE96007207
  • Report No.: ANL/MSD/CP--89009
  • Report No.: CONF-9509255--3
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 198744
  • Archival Resource Key: ark:/67531/metadc666306

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  • September 1, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Aug. 23, 2016, 3:30 p.m.

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Crabtree, G.W.; Leaf, G.K.; Kaper, H.G.; Vinokur, V.M.; Koshelev, A.E.; Braun, D.W. et al. Driven motion of vortices in superconductors, article, September 1, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc666306/: accessed November 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.