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.

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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