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.

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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