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Article

Revealing quantum spin liquid in the herbertsmithite ZnCu3(OH)6Cl2

arXiv:1806.11081.. 2018. P. 1-6.
Leevik Y., Shaginyan V., Amusia M., Clark J., Japaridze G., Msezane A., Stephanovich V., Kirichenko E.

Based on experimental data and our theoretical analysis, we provide a strategy for unambiguous establishing of gapless quantum spin liquid state (QSL) in herbertsmithite and other materials. To clarify the nature of QSL, we recommend measurements of heat transport, low-energy inelastic neutron scattering and optical conductivity under the application of external magnetic field at low temperatures. We also suggest that artificially introduced inhomogeneity into ZnCu3(OH)6Cl2 can stabilize QSL, and serves as a test elucidating the contribution coming from impurities. We predict the results of these measurements in the case of gapless QSL.