Fåk, B and Kermarrec, E and Messio, L and Bernu, B and Lhuillier, C and Bert, F and Mendels, P and Koteswararao, B and Bouquet, F and Ollivier, J and Hillier, AD and Amato, A and Colman, RH and Wills, AS (2012) Kapellasite: a kagome quantum spin liquid. Phys. Rev. Lett. 109, 037208 (2012)
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Magnetic susceptibility, NMR, muSR, and inelastic neutron scattering measurements show that kapellasite, Cu3Zn(OH)6Cl2, a geometrically frustrated spin-1/2 kagome antiferromagnet polymorphous with the herbertsmithite mineral, is a gapless spin liquid with frustrated interactions showing unusual dynamic short-range correlations of non-coplanar cuboc2 type which persist down to 20 mK. The Hamiltonian is determined from a fit of a high-temperature series expansion to thermodynamical data. The experimental data are compared to theoretical calculations using the Schwinger-boson approach.
|Title:||Kapellasite: a kagome quantum spin liquid|
|Additional information:||5 pages, 5 figures. Published in PRL, link to supplemental materials added|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry|
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