It has long been hoped that spin liquid states might be observed in materials that realize the
triangular-lattice Hubbard model. However, weak spin–orbit coupling and other small …

The pyrochlore magnet Ce 2 Zr 2 O 7 has attracted much attention as a quantum spin ice
candidate whose novelty derives in part from the dipolar-octupolar nature of the Ce 3+ …

Neutron diffraction and spectroscopy offer unique insight into structures and properties of
solids and molecular materials. All neutron instruments located at the various neutron …

Two-dimensional triangular-lattice materials with spin-1/2 are perfect platforms for
investigating quantum frustrated physics with spin fluctuations. Here we report the structure …

Low dimensional quantum magnets are interesting because of the emerging collective
behavior arising from strong quantum fluctuations. The one-dimensional (1D) S= 1/2 …

We review recent studies of spin dynamics in rare-earth orthorhombic perovskite oxides of
the type RMO 3, where R is a rare-earth ion and M is a transition-metal ion, using single …

Magnetic defects play an important, but poorly understood, role in magnetic topological
insulators (TIs). For example, topological surface transport and bulk magnetic properties are …

Spin liquid ground states are predicted to arise within several distinct scenarios in
condensed matter physics. The observation of these disordered magnetic states is …

We present observations of highly frustrated quasi-two-dimensional (2D) magnetic
correlations in the honeycomb lattice layers of the S eff= 1/2 compound γ-BaCo 2 (PO 4) 2 (γ …

Fifty years after Anderson's resonating valence-bond proposal, the spin-1/2 triangular-lattice
Heisenberg antiferromagnet (TLHAF) remains the ultimate platform to explore highly …