High-pressure studies of neodymium-doped lanthanum superhydrides

ORAL

Abstract

Hydrogen-rich hydrides are well known to show superconductivity in the vicinity of room temperature under pressure. The discovery of very high-Tc superconductivity in binary hydride systems accelerated the field of hydride superconductivity greatly. There is current interest in ternary hydrides to further enhance the critical temperature and reduce the synthesis pressure. Here we investigated the effect of doping and substitution of magnetic ions in these hydrides focusing on the La-H system including its superhydrides. We explore the effect of magnetic neodymium ions on the structure, stability, and Tc of these lanthanum-based hydrides. The work involves in-situ powder x-ray diffraction for the synthesis of the ternary Nd-La-H system at high pressure-temperature conditions.

*NSF (DMR-1933622), DOE/NNSA (DE-NA0003975), DE-AC02-07CH11358

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Presenters

  • Nilesh P Salke

    • University of Illinois Chicago
    • Department of Physics, University of Illinois Chicago, Chicago, USA

Authors

  • Nilesh P Salke

    • University of Illinois Chicago
    • Department of Physics, University of Illinois Chicago, Chicago, USA

  • Abdul Haseeb Manayil Marathamkottil

    • University of Illinois Chicago

  • Muhetaer Aihaiti

    • University of Illinois Chicago
    • Carnegie Inst of Washington
    • Department of Physics, University of Illinois at Chicago, Chicago, IL 60607, USA
    • University of Illinois at Chicago, USA

  • Yue Meng

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

  • Maddury S Somayazulu

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

  • Sergey L Budko

    • Iowa State University
    • Ames Laboratory and Department of Physics, Iowa State University
    • Ames Laboratory/Iowa State University

  • Paul C Canfield

    • Iowa State University
    • Ames Laboratory and Department of Physics, Iowa State University
    • Ames Laboratory/Iowa State University

  • Russell J Hemley

    • University of Illinois Chicago
    • University of Illinois at Chicago
    • George Washington Univ
    • Departments of Physics and Chemistry, University of Illinois at Chicago
    • Department of Physics, University of Illinois at Chicago, Chicago, IL 60607, USA; Department of Chemistry, University of Illinois at Chicago, Chicago, IL 60607, USA
    • Department of Physics, University of Illinois Chicago, Chicago, USA
    • University of Illinois at Chicago, USA