APS Logo

Studying shunted SQUID measurements in a controlled magnetic field setting

POSTER

Abstract

In recent years, the study of nanodevices such as superconducting quantum interference devices (SQUIDs) have increased in popularity due to their usage in magnetometry, for example in the magnetism of nanoparticles. Particularly, SQUIDs have the capability of measuring small changes in magnetic field and changes in magnetization at the level of a few Bohr magnetons. Electrical measurements of a SQUID, which is shunted with an on-chip Au resistor, are shown in the normal and superconducting states, at temperatures down to 4 K. Stable critical currents and hysteretic voltage-current characteristics are observed. The SQUID holder is fitted within a custom-made solenoid to control the magnetic flux passing through the SQUID. Data and corresponding theory showing the dependence on the device's critical current on magnetic field is presented as well as a discussion of these results.

Authors

  • Jacob Adamczyk

    Cleveland State University

  • Clemens Winkelmann

    University of Michigan, Department of Physics \& Astronomy, Michigan State University; CREATE for STEM Institute, Department of Physics \& Astronomy, Michigan State University, Kettering University, Kent State University - Physics, Kent State University - Chemistry, Institute for Physics, Martin-Luther-Universitaet, Halle, Germany, Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA, IPG Photonics, 50 Old Webster Rd., Oxford, MA 01540, OptiGrate, 562 S. Econ Circle, Oviedo, FL 32765, Northrop Grumman Synoptics, 1201 Continental Blvd., Charlotte, NC 28273, University of Toledo, The University of Toledo, Toledo, OH, Case Western Reserve University, Clarkson University, Univ of Dayton, Australian Ntl Univ, U.S. Army Combat Capabilities Dev Command - Armament Ctr, Wayne State University, The University of Akron, Institute of Physics, University of Belgrade, University of Wisconsin Oshkosh, Néel Institute, Grenoble, France