High Transition Temperature Nano Superconding Quantum Interference Devices

ORAL

Abstract

We report fabrication and electrical characterization of nanoscale superconducting quantum interference devices (SQUIDs) from YBCO using a helium ion microscope. Focused helium ion irradiation is used to pattern the material on the nanoscale to form the SQUID loop and junctions. The nano SQUIDs are coupled to a direct inject pickup loop that is 200 microns in diameter that results in a periodicty of 170nT/flux quantum. Noise measurements reveal a white field noise of 1 pT/rt Hz. These SQUIDs can exhbit very large resistances in excess of 100 ohms and large modulation voltages as high as 0.4mV.

*THis work supported by AFOSR, NIH. NSF and UCOP.

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Presenters

  • Shane Cybart

    • Mechanical Engineering, University of California Riverside

Authors

  • Shane Cybart

    • Mechanical Engineering, University of California Riverside

  • Ethan Cho

    • Department of Mechanical Engineering, University of California, Riverside
    • Mechanical Engineering, University of California Riverside

  • Hao Li

    • Mechanical Engineering, University of California Riverside