Elucidating the magnetic structure of frustrated S = 1/2 kagome antiferromagnet claringbullite, Cu4(OH)6FCl, by powder neutron diffraction
Quantum spin liquids (QSLs) are intriguing states of matter in which magnetic frustration and strong quantum fluctuations prevent classical long range magnetic order. To date, one of the best experimental realisations of such a system is herbertsmithite, ZnCu3(OH)6Cl2, but the exact nature of its QSL state remains a matter of debate. Here, we propose to explore the magnetic structure of deuterated claringbullite, Cu4(OD)6FCl, by powder neutron diffraction (PND). Like herbertsmithite, claringbullite contains frustrated kagome layers of Cu2+ ions. Claringbullite undergoes a magnetic ordering transition at T ~ 17 K, but it has been shown that replacing the intersite Cu2+ ions in claringbullite with Zn2+ results in a potential QSL state. PND is necessary in order to elucidate the nature of the spin order in claringbullite below 17 K which, in turn, will aid in the understanding of the transition to the QSL state in the ZnxCu4-x(OH)6FCl series.
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TUSTAIN Katherine; ABDELDAIM Aly; L. Clark; GRAHAM Jennifer and RITTER Clemens. (2019). Elucidating the magnetic structure of frustrated S = 1/2 kagome antiferromagnet claringbullite, Cu4(OH)6FCl, by powder neutron diffraction. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2632
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