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Vortex flow and transverse flux screening at the Bose glass transition

Smith, A. W. and Jaeger, H. M. and Rosenbaum, T. F. and Petrean, A. M. and Kwok, W. K. and Crabtree, G. W. (2000) Vortex flow and transverse flux screening at the Bose glass transition. Physical Review Letters, 84 (21). pp. 4974-4977. ISSN 0031-9007. doi:10.1103/PhysRevLett.84.4974.

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We study the vortex phase diagram in untwinned YBCO crystals with colunmar defects. These randomly distributed defects are expected to induce a "Bose glass'' phase of localized vortices exhibiting a vanishing resistance and Meissner effect for magnetic fields H⊥ to transverse to the columns. We directly observe the transverse Meissner effect using a Hall probe array. As predicted, the Meissner state breaks down at temperatures T_s that decrease linearly as H⊥ to increases. However, T_s lies far below the conventional melting temperature T_m determined by a vanishing resistivity, suggesting a regime where vortices are effectively localized even when rotated off the columnar defects.

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Additional Information:© 2000 The American Physical Society. Received 3 December 1999. We thank Dr. Reggie Ronningen for assisting with the ion irradiation at the National Superconducting Cyclotron Laboratory. This work was supported by the National Science Foundation through the Science and Technology Center for Superconductivity (DMR91-20000) and under Contract No. PHY-9528844, and by the U.S. Department of Energy, BES-Materials Science under Contract No. W-31-109-ENG-38 (W.K. K., A. M. P., G.W. C.).
Funding AgencyGrant Number
Department of Energy (DOE)W-31-109-ENG-38
Issue or Number:21
Classification Code:PACS numbers: 74.60.Ge, 74.25.Bt
Record Number:CaltechAUTHORS:20140707-163031557
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46972
Deposited By: George Porter
Deposited On:10 Jul 2014 22:56
Last Modified:10 Nov 2021 17:32

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