Vortex dynamics in the YBa$_{\mathrm{2}}$Cu$_{\mathrm{3}}$O$_{\mathrm{7-d\thinspace }}$Superconductor with In-plane Columnar Defects Introduced by Irradiation

ORAL

Abstract

We report on the effects of introducing columnar defects by irradiation in clean single crystals of YBa$_{\mathrm{2}}$Cu$_{\mathrm{3}}$O$_{\mathrm{7-d\thinspace }}$in a direction \textit{parallel} to the ab-plane. The defects were introduced by bombarding the samples with $^{\mathrm{208}}$Pb$^{\mathrm{56+}}$ ions at an energy of 1.4GeV. We find that the defects suppress the first order melting transition for magnetic fields aligned parallel or at small angles relative to the defects. The columnar defects \textit{inhibit} vortex motion of vortices parallel to the defects, while the vortices experience less pinning when they are perpendicular to the defects. Our results suggest that the pinning anisotropy is increased, at least for magnetic fields up to the matching field dose of 1T.

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Authors

  • Andra Petrean

    Department of Physics, Austin College

  • Lisa Paulius

    Department of Physics, Western Michigan University

  • Valentina Tobos

    Department of Natural Sciences, Lawrence Technological University

  • Harry A. Atwater

    Institute for Advanced Physics and Mathematics, Zhejiang University of Technology, Baylor University, baylor university, Lanzhou Jiaotong University, Lanzhou University, Trinity University, University of New Hampshire, Los Alamos National Lab, Southwest Research Institute, University of Texas San Antonio, Texas A&M University, Department of Physics, Texas State University, San Marcos, TX78666, None, Southern Illinois University, Carbondale, Illinois 62901, Beijing Computational Science Research Center, Beijing 100094, P.R. China, The State Key Laboratory of Quantum Optics and Quantum Optics Devices, China, COMSATS Institute of Information Technology, Islamabad, Pakistan, Lamar University, NIST, NIST Physical Measurement Laboratory,Thermodynamic Metrology Laboratory, Rice University, University of Texas at Rio Grande Valley, University of Texas at Dallas, Texas Tech University, Department of Physics and Astronomy, Texas A\&M University, Russian Quantum Center, Physics Department, International Laser Center, M.V. Lomonosov Moscow State University, Baylor University, Texas A&M University, Princeton University, Baylor University, Texas A&M University, Florida State University, Univ of Texas, Dallas, University of Texas Rio Grande Valley, University of Houston, Physics and Astronomy, Material Science and Eng,Texas A\&M University. WPI-Advanced Institute for Materials Research, Tohoku University, Sendai, Japan, Physics and Astronomy, Texas A\&M University, Material Science and Eng., Texas A\&M University, Texas Christian University, Utaca College, University of Texas at Arlington, Angelo State University Physics & Geosciences Department, Texas State University, Universidade Federal de Viçosa, Department of Physics, Lamar University, Texas Lutheran University, University of Oklahoma, Texas A&M University, Baylor University, Princeton University, Texas A&M University, Baylor University, Institute for Quantum Science and Engineering (IQSE) and Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843-4242, Texas A\&M University, Florida A&M University, Texas A&M University, Princeton University, Baylor University, Department of Physics and Astronomy, Texas A&M University, College Station, TX, Texas A&M University and Baylor University, Abilene Christian University, Michigan State University, Argonne National Laboratory, Southern Methodist University, University of Maryland, Baltimore County, Baltimore, MD 21250, Institute for Quantum Science and Engineering, Texas A&M University 4242 TAMU College Station, Texas 77843-4242, The Institute for Quantum Science and Engineering, Texas A&M University, Southern Nazarene University, Texas A&M University, Landau Institute for Theoretical Physics, University of Cologne, Department of Physics, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, Texas 75080, USA, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, USA, $^{1}$Department of Physics and Astronomy, Texas A\&M University, $^{1}$Department of Physics and Astronomy, Texas A\&M University, $^{2}$WPI-AIMR, Tohoku University, Japan, Department of Physics, Austin College, AMRIS/NHMFL, University of Florida, University of Texas Southwestern Medical Center, Mississippi State University, The Methodist Hospital System, Biophotonic Solutions, Inc., University of Texas, Austin, California Insititute of Technology

  • Wai-Kwong Kwok

    Materials Science Division, Argonne National Laboratory