Superconducting critical current measurements in pulsed magnets

ORAL

Abstract

Measurements of critical current in single crystals of high temperature superconductor using pulsed magnetic fields are tricky due to short time scale, fast field sweep rate and sheer absolute current values in restricted sample space. We will present a measurement system design that addresses the challenges via a combination of Field Programmable Gate Array (FPGA) fast-response signal generation and detection architecture and Focused Ion Beam crystal shaping.

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Authors

  • Fedor F. Balakirev

    • National High Magnetic Field Lab
    • Los Alamos National Laboratory, Los Alamos, NM, USA

  • Philip J.W. Moll

    • Laboratory for Solid State Physics, ETH Zurich, Switzerland

  • Nikolai D. Zhigadlo

    • Laboratory for Solid State Physics, ETH Zurich, Switzerland

  • Janusz Karpinski

    • Laboratory for Solid State Physics, ETH Zurich, Switzerland

  • Bertram Batlogg

    • Laboratory for Solid State Physics, ETH Zurich, Switzerland