Magnetometry and Stress Tomography in Diamond Anvil Cells using Nitrogen Vacancy Centers

ORAL

Abstract

The Nitrogen Vacancy (NV) center in diamond has emerged as a promising candidate for the nanoscale sensing of temperature, strain, electric and magnetic fields. The integration of NV-based sensing into diamond anvil cells (DAC), a workhorse of high pressure science, offers a means not only for making spatially resolved measurements of relevant sample properties but also for monitoring the stress distribution in the diamond anvil itself. Compared to conventional high pressure probes, key advantages of NV sensing include diffraction limited spatial resolution (~ 1 um) and versatility, thus enabling exploration of novel phases of matter and the transitions between them, with pressure as a tuning parameter. Additionally, imaging the stress distribution inside DACs can provide insight into the mechanical failure of anvils and inform improvements in anvil design. We describe two main results: 1) we generate a layer of NVs near the tip of the diamond anvil and use DC magnetometry to study pressure-driven magnetic phase transitions and 2) using a carefully applied bias magnetic field we map the tensorial stress distribution within the diamond anvil itself.

–

Presenters

  • Prabudhya Bhattacharyya

    University of California, Berkeley, Physics, University of California, Berkeley

Authors

  • Prabudhya Bhattacharyya

    University of California, Berkeley, Physics, University of California, Berkeley

  • Satcher Hsieh

    University of California, Berkeley, Physics, University of California, Berkeley

  • Thomas Mittiga

    University of California, Berkeley, Physics, University of California, Berkeley

  • Bryce H Kobrin

    University of California, Berkeley, Physics, University of California, Berkeley

  • Francisco Machado

    University of California, Berkeley, Physics, University of California, Berkeley, Department of Physics, University of California, Berkeley

  • Chong Zu

    University of California, Berkeley, Physics, University of California, Berkeley

  • Thomas Smart

    University of California, Berkeley, Earth and Planetary Science, University of California, Berkeley

  • Tim Hoehn

    Physics, University of California, Berkeley

  • Nicholas Z Rui

    University of California, Berkeley, Physics, University of California, Berkeley

  • Mehdi Kamrani

    Aerospace Engineering, Iowa State University

  • Soonwon Choi

    University of California, Berkeley, UC Berkeley, Physics, University of California Berkeley, University of California Berkeley, Harvard University, Physics, University of California, Berkeley

  • Viktor V. Struzhkin

    Carnegie Institution of Washington, Geophysical Laboratory, Washington, DC 20015, USA, Geophysical Laboratory, Carnegie Institution of Washington, Geophysical Laboratory, Carnegie Institute of Washington

  • Valery Levitas

    Iowa State University, Aerospace Engineering, Iowa State University

  • Raymond Jeanloz

    Earth and Planetary Science, University of California, Berkeley

  • Norman Yao

    University of California, Berkeley, Department of Physics, University of California, Berkeley, California 94720, USA, Physics, University of California, Berkeley, Department of Physics, University of California, Berkeley, University of California, Berkeley and Lawrence Berkeley National Laboratory, Materials Sciences Division