Barlowite: The next quantum spin liquid?

ORAL

Abstract

Barlowite, Cu4(OH)6BrF, is a newly reported quantum spin liquid (QSL) host material, containing “perfect” kagomé layers separated by interlayer Cu2+ ions, with reports that Zn2+ substitution for Cu2+ induces a QSL ground state. In this talk, we will report on the crystal growth and a comprehensive suite of measurements, including x-ray and neutron diffraction, NMR, specific heat, and magnetization that resolve the ambiguities of the previously reported disorder on the interlayer sites, and provide a quantitative comparison of the physics of Barlowite to other synthetic Cu2+ kagomé minerals. These results pave the way to discovery of S=1/2 kagomé realizations with minimal interlayer coupling effects.

*Work at JHU Institute for Quantum Matter (IQM) was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering through Grant No. DE-FG02-08ER46544. Work in Tallinn was supported by the Estonian Research Agency (IUT23-7, PRG4) and the Europea

–

Presenters

  • Chris Pasco

    • Institute for Quantum Matter, Johns Hopkins University
    • Department of Chemistry , Johns Hopkins University

Authors

  • Chris Pasco

    • Institute for Quantum Matter, Johns Hopkins University
    • Department of Chemistry , Johns Hopkins University

  • Ivo Heinmaa

    • National Institute of Chemical Physics and Biophysics

  • Ravio Stern

    • National Institute of Chemical Physics and Biophysics

  • Collin Broholm

    • Johns Hopkins University
    • Institute for Quantum Matter, Johns Hopkins University

  • Tyrel McQueen

    • Johns Hopkins University
    • Institute for Quantum Matter, Johns Hopkins University
    • Department of Chemistry , Johns Hopkins University
    • The Johns Hopkins University