Commercial SQUID magnetometer-compatible NMR probe and its application for studying a quantum magnet

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Authors

  • Tarek Vennemann
  • Dongyoung Yoon
  • Arnaud Magrez
  • Helmuth Berger
  • Lin Yang
  • Ivica Zivkovic
  • Peter Babkevich
  • H. M. Rønnow

Colleges, School and Institutes

External organisations

  • École Polytechnique Fédérale de Lausanne (EPFL)

Abstract

We present a compact nuclear magnetic resonance (NMR) probe which is compatible with a magnet of a commercial superconducting quantum interference device magnetometer and demonstrate its application to the study of a quantum magnet. We employ trimmer chip capacitors to construct an NMR tank circuit for low temperature measurements. Using a magnetic insulator MoOPO4 with S = 1/2 (Mo5+) as an example, we show that the T-dependence of the circuit is weak enough to allow the ligand-ion NMR study of magnetic systems. Our 31P NMR results are compatible with previous bulk susceptibility and neutron scattering experiments and furthermore reveal unconventional spin dynamics.

Details

Original languageEnglish
Article number046101
JournalReview of Scientific Instruments
Volume89
Issue number4
Publication statusPublished - 3 Apr 2018

Keywords

  • NMR, quantum magnetism

ASJC Scopus subject areas