Frustration in magnetic materials arising from competing exchange interactions can prevent
the system from adopting long-range magnetic order and can instead lead to a diverse …

We studied the magnetic properties of YCu 3 (OH) 6 Br 2 [Br 1− x (OH) x](x= 0.33), where Cu
2+ ions form two-dimensional kagome layers. There is no magnetic order down to 50 mK …

Recent improvements in ultra-high magnetic field generation and precise measurement
techniques have facilitated the study of the physical properties of magnetic materials under …

Quantum spin liquids represent exotic states of spin systems characterized by long-range
entanglement and emergent fractionalized quasiparticles. It is generally believed that …

We investigate the magnetism of a previously unexplored distorted spin-1/2 kagome model
consisting of three symmetry-inequivalent nearest-neighbor antiferromagnetic Heisenberg …

We demonstrate that the single crystal of YCu 3 [OH (D)] 6.5 Br 2.5 (YCOB) is a kagome
Heisenberg antiferromagnet without evident orphan spins (≪ 0.8%). The site mixing …

It is predicted that strongly interacting spins on a frustrated lattice may lead to a quantum
disordered ground state or even form a quantum spin liquid with exotic low-energy …

We performed nuclear magnetic resonance studies on a kagome antiferromagnet YCu 3
(OH) 6 Br 2 [Br 1− x (OH) x]. No significant NMR spectral broadening is found in the Br center …

The emergence of nontrivial quantum states from competing interactions is a central issue in
quantum magnetism. In particular, for the realization of the quantum spin-liquid state …

Beyond the absence of long-range magnetic orders, the most prominent feature of the
elusive quantum spin liquid (QSL) state is the existence of fractionalized spin excitations, ie …