Magnetically ordered and kagome quantum spin liquid states in the Zn-doped claringbullite series
| Autor: | M. Georgopoulou, B. Fåk, D. Boldrin, J. R. Stewart, C. Ritter, E. Suard, J. Ollivier, A. S. Wills |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Physical Review B. 107 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.107.024416 |
| Popis: | 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. 8 pages, 5 figures, Supplemental Material |
| Databáze: | OpenAIRE |
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