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arXiv · 2211.08072

Magnetically ordered and kagome quantum spin liquid states in the Zn-doped claringbullite series

M. Georgopoulou·B. Fåk·D. Boldrin·J. R. Stewart·C. Ritter·E. Suard·J. Ollivier·A. S. Wills
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Abstract

Neutron scattering measurements have been performed on deuterated powder samples of claringbullite and Zn-doped claringbullite (Zn$_x$Cu$_{4-x}$(OD)$_{6}$FCl). At low temperatures, claringbullite Cu$_4$(OD)$_{6}$FCl forms a distorted pyrochlore lattice with long-range magnetic order and spin-wave-like magnetic excitations. Partial Zn doping leads to the nominal ZnCu$_3$(OD)$_{6}$FCl compound, a geometrically frustrated spin-1/2 kagome antiferromagnet that shows no transition to magnetic order down to 1.5 K. The magnetic excitations form a gapless continuum, a signature of fractional excitations in a quantum spin liquid.

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M. Georgopoulou, B. Fåk, D. Boldrin, J. R. Stewart, C. Ritter, E. Suard, J. Ollivier, A. S. Wills. 2022-11-15. Magnetically ordered and kagome quantum spin liquid states in the Zn-doped claringbullite series. https://doi.org/10.1103/physrevb.107.024416

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