Campus Units

Aerospace Engineering, Materials Science and Engineering, Mechanical Engineering, Ames Laboratory

Document Type

Article

Publication Version

Submitted Manuscript

Publication Date

12-20-2018

Journal or Book Title

arXiv

Abstract

Pressure alters the physical, chemical and electronic properties of matter. The development of the diamond anvil cell (DAC) enables tabletop experiments to investigate a diverse landscape of high-pressure phenomena ranging from the properties of planetary interiors to transitions between quantum mechanical phases. In this work, we introduce and utilize a novel nanoscale sensing platform, which integrates nitrogen-vacancy (NV) color centers directly into the culet (tip) of diamond anvils. We demonstrate the versatility of this platform by performing diffraction-limited imaging (~600 nm) of both stress fields and magnetism, up to pressures ~30 GPa and for temperatures ranging from 25-340 K. For the former, we quantify all six (normal and shear) stress components with accuracy <0.01 GPa, offering unique new capabilities for characterizing the strength and effective viscosity of solids and fluids under pressure. For the latter, we demonstrate vector magnetic field imaging with dipole accuracy <10−11 emu, enabling us to measure the pressure-driven α↔ε phase transition in iron as well as the complex pressure-temperature phase diagram of gadolinium. In addition to DC vector magnetometry, we highlight a complementary NV-sensing modality using T1 noise spectroscopy; crucially, this demonstrates our ability to characterize phase transitions even in the absence of static magnetic signatures. By integrating an atomic-scale sensor directly into DACs, our platform enables the in situ imaging of elastic, electric and magnetic phenomena at high pressures.

Comments

This is a pre-print of the article Hsieh, S., P. Bhattacharyya, C. Zu, T. Mittiga, T. J. Smart, F. Machado, B. Kobrin et al. "Imaging stress and magnetism at high pressures using a nanoscale quantum sensor." arXiv preprint arXiv:1812.08796 (2018). Posted with permission.

Copyright Owner

The Authors

Language

en

File Format

application/pdf

Published Version

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