  The search for quantum spin liquid (QSL) materials has attracted significant
attention in the field of condensed matter physics in recent years, but until
now only a handful of them are considered as candidates hosting QSL ground
state. Owning to their geometrically frustrated structure, Kagome materials are
ideal system to realize QSL. In this study, we synthesized the kagome
structured material Claringbullite (Cu$_4$(OH)$_6$FCl) and then performed Zn
doping to form Cu$_3$Zn(OH)$_6$FCl. Comprehensive measurements reveal that
doping Zn$^{2+}$ ions transforms magnetically ordered Cu$_4$(OH)$_6$FCl into a
non-magnetic QSL candidate Cu$_3$Zn(OH)$_6$FCl. Therefore, the successful
syntheses of Cu$_4$(OH)$_6$FCl and Cu$_3$Zn(OH)$_6$FCl not only provide a new
platform for the study of QSL but also a novel pathway of investigating the
transition between QSL and magnetically ordered systems.
