Negative-chirality order in $S=1/2$ kagome antiferromagnet CdCu${}_3$(OH)${}_6$(NO${}_3$)${}_2\cdot$H${}_2$O

Abstract

The neutron diffraction and nuclear magnetic resonance (NMR) measurements have been used to microscopically analyze the magnetic structure in the $S=1/2$ kagome antiferromagnet CdCu${}_3$(OH)${}_6$(NO${}_3$)${}_2\cdot$H${}_2$O. Below the magnetic ordering temperature $T_N\simeq 4$ K, magnetic Bragg reflections at (110) and (100) were found in the neutron diffraction pattern, which suggests a $q=0$ magnetic structure. Furthermore, the vector spin chirality for the $q=0$ structure was successfully identified from the internal field direction obtained by the ${}^{14}$N-NMR measurement. Our findings point to a chirality-ordered magnetic structure with negative vector chirality and $⟨100⟩$ anisotropy.

6 pages, 5 figures

References in corpus (6)

• Thermal Hall Effect of Spins in a Paramagnet
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Cited by in corpus (1)

• Chiral crossroads in $\mathrm{H}{\mathrm{o}}_3\mathrm{Sc}{\mathrm{O}}_6$: a tale of frustration in maple leaf lattice