Transport Properties of Ferromagnet-Superconductor Hybrids near the Superconducting Transition Temperature

ORAL

Abstract

We have studied the transport properties of Ferromagnet-Superconductor Hybrids (FSH) near their superconducting transition temperature. The FSH was composed from periodic arrays of nanosized Ni stripes on the top of 100 nm thin Sn films. Electron-Beam Lithography was used to pattern the Sn films and the periodic arrays of Ni nanostripes on SiO$_{2}$ substrate. The Sn films and Ni nanostripes were deposited by thermal quench condensation at liquid nitrogen temperature. A thermally evaporated Germanium (Ge) thin film on top of the Sn films served as an insulating barrier between the Sn and Ni structures. We have studied dependence of resistivity and critical current on temperature and magnetic field normal to the film. We have observed strong hysteresis of resistivity and critical current in magnetic field. We have observed an anisotropy in the critical current depending on the current direction being parallel or perpendicular to the Ni nanostripes.

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Authors

  • Wonbae Bang

    Department of Physics and Astronomy, Texas A\&M University, College Station, Texas 77843, USA

  • Darren Depoy

    University of Michigan, Univeristy of Michigan, Texas A\&M University, UC Riverside, University of Massachusetts, STScI, NOAO, University of Texas, Cyclotron Institute, Texas A\&M University, ENEA, Italy, INFN, Italy, University of Texas at Austin, TX, Cyclotron Institute, TAMU, TX, Cyclotron Institute TAMU, TX, Cyclotron Institute - Texas A\&M University, Texas A\&M Univ, Texas A\&M University, Baylor University, Department of Physics and Astronomy, Texas A\&M University, College Station, Texas, School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai, 200240, China, Department of Materials Science and Engineering, Texas A\&M University, College Station, Texas, Department of Mechanical Engineering, Texas A\&M University, College Station, Texas, Texas State University, University of Texas at Arlington, Lawrence Berkeley National Laboratory, DESY, Department of Physics and Astronomy, Texas A\&M University, Department of Physics, Syracuse University, Department of Physics and Astronomy, Vanderbilt University, Texas A\&M University, Princeton University and Baylor University, Texas A\&M Univ at Qatar, Kazan Federal University, Max Planck Institute for Nuclear Physics, Institue for Quantum Science and Engineering (IQSE) and Department of Physics \& Astronomy, Texas A\&M University, College Station, Texas 77843, USA, MIT, Sandia National Laboratories, Albuquerque, New Mexico, Postgrad, ORNL, Muons Inc., Texas Lutheran University, West Virginia University, Lawrence Livermore National Laboratory, University of Kentucky, US Naval Academy, University of Dallas, U.S. Naval Academy, Univ of Texas, Arlington, Department of Physics, Texas A\&M University, College Station, TX 77845, Science and Petroleum Departments, Texas A\&M University in Qatar, Doha, Qatar, Rice University, Houston, Texas, USA, Department of Physics, Texas State University, Florida A\&M University, Texas A\&M University in Qatar, Doha, Qatar, Physics and Astronomy Dept., TCU, Geology Dept., TCU, Colorado College, University of Texas at El Paso, University of Texas at Brownsville, Rochester Institute of Technology, Baylor University, Texas A\&M, Princeton University, Baylor University, Princeton University, Texas A\&M University, Materials Science and Engineering and Department of Physics and Astronomy, Texas A\&M University; WPI-AIMR, Tohoku University, Japan, WPI-AIMR, Tohoku University, Department of Chemistry, Texas A\&M University, Materials Science and Engineering and Department of Physics and Astronomy, Texas A\&M University, WPI-AIMR, Tohoku University, Japan, Department of Physics and Astronomy, Texas A\&M University, College Station, Texas 77843, USA, Department of Physics and Astronomy, Texas A\&M University and WPI-Advanced Institute for Materials Research, Tohoku University, Japan, University of Texas at Austin, Center for Nonlinear Dynamics and Department of Physics, The University of Texas at Austin, JILA, NIST, Department of Physics and Astronomy, Texas A\&M University and Institute for Quantum Studies and Engineering, College Station, TX 77843-4242, USA, Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov street, Nizhny Novgorod 603950, Russia, Department of Physics, University of Texas at Austin, Rice University, Texas A&M University

  • Darren Depoy

    University of Michigan, Univeristy of Michigan, Texas A\&M University, UC Riverside, University of Massachusetts, STScI, NOAO, University of Texas, Cyclotron Institute, Texas A\&M University, ENEA, Italy, INFN, Italy, University of Texas at Austin, TX, Cyclotron Institute, TAMU, TX, Cyclotron Institute TAMU, TX, Cyclotron Institute - Texas A\&M University, Texas A\&M Univ, Texas A\&M University, Baylor University, Department of Physics and Astronomy, Texas A\&M University, College Station, Texas, School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai, 200240, China, Department of Materials Science and Engineering, Texas A\&M University, College Station, Texas, Department of Mechanical Engineering, Texas A\&M University, College Station, Texas, Texas State University, University of Texas at Arlington, Lawrence Berkeley National Laboratory, DESY, Department of Physics and Astronomy, Texas A\&M University, Department of Physics, Syracuse University, Department of Physics and Astronomy, Vanderbilt University, Texas A\&M University, Princeton University and Baylor University, Texas A\&M Univ at Qatar, Kazan Federal University, Max Planck Institute for Nuclear Physics, Institue for Quantum Science and Engineering (IQSE) and Department of Physics \& Astronomy, Texas A\&M University, College Station, Texas 77843, USA, MIT, Sandia National Laboratories, Albuquerque, New Mexico, Postgrad, ORNL, Muons Inc., Texas Lutheran University, West Virginia University, Lawrence Livermore National Laboratory, University of Kentucky, US Naval Academy, University of Dallas, U.S. Naval Academy, Univ of Texas, Arlington, Department of Physics, Texas A\&M University, College Station, TX 77845, Science and Petroleum Departments, Texas A\&M University in Qatar, Doha, Qatar, Rice University, Houston, Texas, USA, Department of Physics, Texas State University, Florida A\&M University, Texas A\&M University in Qatar, Doha, Qatar, Physics and Astronomy Dept., TCU, Geology Dept., TCU, Colorado College, University of Texas at El Paso, University of Texas at Brownsville, Rochester Institute of Technology, Baylor University, Texas A\&M, Princeton University, Baylor University, Princeton University, Texas A\&M University, Materials Science and Engineering and Department of Physics and Astronomy, Texas A\&M University; WPI-AIMR, Tohoku University, Japan, WPI-AIMR, Tohoku University, Department of Chemistry, Texas A\&M University, Materials Science and Engineering and Department of Physics and Astronomy, Texas A\&M University, WPI-AIMR, Tohoku University, Japan, Department of Physics and Astronomy, Texas A\&M University, College Station, Texas 77843, USA, Department of Physics and Astronomy, Texas A\&M University and WPI-Advanced Institute for Materials Research, Tohoku University, Japan, University of Texas at Austin, Center for Nonlinear Dynamics and Department of Physics, The University of Texas at Austin, JILA, NIST, Department of Physics and Astronomy, Texas A\&M University and Institute for Quantum Studies and Engineering, College Station, TX 77843-4242, USA, Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov street, Nizhny Novgorod 603950, Russia, Department of Physics, University of Texas at Austin, Rice University, Texas A&M University

  • Darren Depoy

    University of Michigan, Univeristy of Michigan, Texas A\&M University, UC Riverside, University of Massachusetts, STScI, NOAO, University of Texas, Cyclotron Institute, Texas A\&M University, ENEA, Italy, INFN, Italy, University of Texas at Austin, TX, Cyclotron Institute, TAMU, TX, Cyclotron Institute TAMU, TX, Cyclotron Institute - Texas A\&M University, Texas A\&M Univ, Texas A\&M University, Baylor University, Department of Physics and Astronomy, Texas A\&M University, College Station, Texas, School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai, 200240, China, Department of Materials Science and Engineering, Texas A\&M University, College Station, Texas, Department of Mechanical Engineering, Texas A\&M University, College Station, Texas, Texas State University, University of Texas at Arlington, Lawrence Berkeley National Laboratory, DESY, Department of Physics and Astronomy, Texas A\&M University, Department of Physics, Syracuse University, Department of Physics and Astronomy, Vanderbilt University, Texas A\&M University, Princeton University and Baylor University, Texas A\&M Univ at Qatar, Kazan Federal University, Max Planck Institute for Nuclear Physics, Institue for Quantum Science and Engineering (IQSE) and Department of Physics \& Astronomy, Texas A\&M University, College Station, Texas 77843, USA, MIT, Sandia National Laboratories, Albuquerque, New Mexico, Postgrad, ORNL, Muons Inc., Texas Lutheran University, West Virginia University, Lawrence Livermore National Laboratory, University of Kentucky, US Naval Academy, University of Dallas, U.S. Naval Academy, Univ of Texas, Arlington, Department of Physics, Texas A\&M University, College Station, TX 77845, Science and Petroleum Departments, Texas A\&M University in Qatar, Doha, Qatar, Rice University, Houston, Texas, USA, Department of Physics, Texas State University, Florida A\&M University, Texas A\&M University in Qatar, Doha, Qatar, Physics and Astronomy Dept., TCU, Geology Dept., TCU, Colorado College, University of Texas at El Paso, University of Texas at Brownsville, Rochester Institute of Technology, Baylor University, Texas A\&M, Princeton University, Baylor University, Princeton University, Texas A\&M University, Materials Science and Engineering and Department of Physics and Astronomy, Texas A\&M University; WPI-AIMR, Tohoku University, Japan, WPI-AIMR, Tohoku University, Department of Chemistry, Texas A\&M University, Materials Science and Engineering and Department of Physics and Astronomy, Texas A\&M University, WPI-AIMR, Tohoku University, Japan, Department of Physics and Astronomy, Texas A\&M University, College Station, Texas 77843, USA, Department of Physics and Astronomy, Texas A\&M University and WPI-Advanced Institute for Materials Research, Tohoku University, Japan, University of Texas at Austin, Center for Nonlinear Dynamics and Department of Physics, The University of Texas at Austin, JILA, NIST, Department of Physics and Astronomy, Texas A\&M University and Institute for Quantum Studies and Engineering, College Station, TX 77843-4242, USA, Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov street, Nizhny Novgorod 603950, Russia, Department of Physics, University of Texas at Austin, Rice University, Texas A&M University

  • Darren Depoy

    University of Michigan, Univeristy of Michigan, Texas A\&M University, UC Riverside, University of Massachusetts, STScI, NOAO, University of Texas, Cyclotron Institute, Texas A\&M University, ENEA, Italy, INFN, Italy, University of Texas at Austin, TX, Cyclotron Institute, TAMU, TX, Cyclotron Institute TAMU, TX, Cyclotron Institute - Texas A\&M University, Texas A\&M Univ, Texas A\&M University, Baylor University, Department of Physics and Astronomy, Texas A\&M University, College Station, Texas, School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai, 200240, China, Department of Materials Science and Engineering, Texas A\&M University, College Station, Texas, Department of Mechanical Engineering, Texas A\&M University, College Station, Texas, Texas State University, University of Texas at Arlington, Lawrence Berkeley National Laboratory, DESY, Department of Physics and Astronomy, Texas A\&M University, Department of Physics, Syracuse University, Department of Physics and Astronomy, Vanderbilt University, Texas A\&M University, Princeton University and Baylor University, Texas A\&M Univ at Qatar, Kazan Federal University, Max Planck Institute for Nuclear Physics, Institue for Quantum Science and Engineering (IQSE) and Department of Physics \& Astronomy, Texas A\&M University, College Station, Texas 77843, USA, MIT, Sandia National Laboratories, Albuquerque, New Mexico, Postgrad, ORNL, Muons Inc., Texas Lutheran University, West Virginia University, Lawrence Livermore National Laboratory, University of Kentucky, US Naval Academy, University of Dallas, U.S. Naval Academy, Univ of Texas, Arlington, Department of Physics, Texas A\&M University, College Station, TX 77845, Science and Petroleum Departments, Texas A\&M University in Qatar, Doha, Qatar, Rice University, Houston, Texas, USA, Department of Physics, Texas State University, Florida A\&M University, Texas A\&M University in Qatar, Doha, Qatar, Physics and Astronomy Dept., TCU, Geology Dept., TCU, Colorado College, University of Texas at El Paso, University of Texas at Brownsville, Rochester Institute of Technology, Baylor University, Texas A\&M, Princeton University, Baylor University, Princeton University, Texas A\&M University, Materials Science and Engineering and Department of Physics and Astronomy, Texas A\&M University; WPI-AIMR, Tohoku University, Japan, WPI-AIMR, Tohoku University, Department of Chemistry, Texas A\&M University, Materials Science and Engineering and Department of Physics and Astronomy, Texas A\&M University, WPI-AIMR, Tohoku University, Japan, Department of Physics and Astronomy, Texas A\&M University, College Station, Texas 77843, USA, Department of Physics and Astronomy, Texas A\&M University and WPI-Advanced Institute for Materials Research, Tohoku University, Japan, University of Texas at Austin, Center for Nonlinear Dynamics and Department of Physics, The University of Texas at Austin, JILA, NIST, Department of Physics and Astronomy, Texas A\&M University and Institute for Quantum Studies and Engineering, College Station, TX 77843-4242, USA, Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov street, Nizhny Novgorod 603950, Russia, Department of Physics, University of Texas at Austin, Rice University, Texas A&M University