Contacted vs contactless measurements of normal-state resistivity of the cuprate superconductor HgBa<sub>2</sub>CuO<sub>4+δ</sub>

ORAL

Abstract

The normal-state electrical resistivity behavior of the simple-tetragonal cuprate HgBa2CuO4+δ is obtained with a newly built contactless probe by measuring the quality factor of a radio frequency resonance circuit. We compare these results with traditional contacted resistivity measurements that utilize the van der Pauw method. The contact-free probe has the advantage of enabling fast and reliable measurements of samples for which electrical contacts are difficult to prepare, such as HgBa2CuO4+δ after plastic deformation.

*Work supported by the US DOE through the University of Minnesota Center for Quantum Materials, under DE-SC0016371.

–

Presenters

  • Blake R Wendland

    • University of Minnesota

Authors

  • Blake R Wendland

    • University of Minnesota

  • Jack Zwettler

    • University of Minnesota

  • Dinesh K Shukla

    • UGC-DAE Consortium for Scientific Research
    • University of Minnesota
    • University of Minnesota, Twin Cities

  • Zachary W Anderson

    • University of Minnesota, School of Physics and Astronomy
    • University of Minnesota

  • Samuel K Bayliff

    • University of Minnesota

  • Damjan Pelc

    • University of Zagreb

  • Martin Greven

    • University of Minnesota