High Pressure Resonant Inelastic X-ray Scattering (RIXS) and Diffraction studies on UTe<sub>2</sub>

ORAL

Abstract

The spin-triplet superconductor UTe2 [1] has quickly become a ‘hot topic’ in condensed matter physics due to the discovery of re-entrant superconductivity at high magnetic fields [2] One area of interest concerning UTe2 and its family of substitutions includes quantum criticality and other phenomena under pressure. Previous studies have found evidence of quantum criticality and spin triplet behavior at pressures up to 2 GPa [3], however the U-valence and structural behavior at high pressures have not yet been fully explored. We have synthesized single crystals of UTe2 by chemical vapor transport (CVT) and characterized them by powder x-ray diffraction (XRD), resistivity, specific heat, magnetization. Here I will present the findings of resonant inelastic x-ray scattering and XRD measurements conducted under high pressures up to 50 GPa.

[1] L. Dexin, A. Nakamura, F. Honda, et al. Magnetic Properties under Pressure in Novel Spin-Triplet Superconductor UTe2 J. Phys. Soc. Jpn., 90, 073703 (2021) 10.7566/JPSJ.90.073703

[2] S. Ran, IL. Liu, Y.S. Eo, et al. Extreme magnetic field-boosted superconductivity. Nat. Phys. 15, 1250–1254 (2019). 10.1038/s41567-019-0670-x

[3] S. M. Thomas, F. B. Santos, M. H. Christensen, et al. Evidence for a pressure-induced antiferromagnetic quantum critical point in intermediate-valence UTe2 Sci. Adv. 6, 42 10.1126/sciadv.abc8709

*Funding for this work was provided by the NNSA under SSAA grant DE-NA0004086. This work was supported by the US Department of Energy/National Nuclear Security Administration through the Chicago/DOE Alliance Center (CDAC), Award DE-NA0003975.

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Presenters

  • Camilla M Moir

    • University of California, San Diego

Authors

  • Camilla M Moir

    • University of California, San Diego

  • Yuhang Deng

    • University of California, San Diego

  • Eric J Lee-Wong

    • UC San Diego Maple Laboratory

  • Ravhi Kumar

    • University of Illinois at Chicago
    • University of Illinois Chicago
    • Department of Physics, University of Illinois Chicago, 845, W. Taylor Street, Chicago, IL 60607
    • University of Illinois, Chicago
    • Department of Physics, University of Illinois at Chicago

  • Changyong Park

    • Argonne National Laboratory
    • HPCAT, X-ray Science Division, Argonne National Laboratory

  • Yuming Xiao

    • Argonne National Laboratory
    • HPCAT, X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA

  • Paul Chow

    • Argonne National Laboratory

  • Russell J Hemley

    • University of Illinois at Chicago
    • University of Illinois Chicago
    • Departments of Physics, Chemistry, and Earth and Environmental Sciences, University of Illinois Chicago
    • Department of Physics and Chemistry, University of Illinois Chicago, 845, W. Taylor Street, Chicago, IL 60607
    • Departments of Physics, Chemistry, and Earth and Environmental Sciences, University of Illinois at Chicago

  • Ryan E Baumbach

    • National High Magnetic Field Laboratory
    • University of California San Diego
    • NHMFL, Florida State U.

  • M Brian Maple

    • University of California, San Diego
    • University of California San Diego
    • U. of California, San Diego