Quantum spin liquids may be considered'quantum disordered'ground states of spin systems,
in which zero-point fluctuations are so strong that they prevent conventional magnetic long …

In this review, we provide an introduction to the physics of a series of frustrated quantum rare-
earth pyrochlores. We first give a background on the microscopic single-and two-ion physics …

Neutron scattering measurements on the pyrochlore magnet Ce 2 Zr 2 O 7 reveal an
unusual crystal field splitting of its lowest J= 5/2 multiplet, such that its ground-state doublet …

We review a key subset of the experimental studies that have recently focused on cubic
pyrochlore magnets whose pseudospin-1 2 degrees of freedom have mixed dipolar and …

The Ce 3+ pseudospin-1/2 degrees of freedom in the pyrochlore magnet Ce 2 Zr 2 O 7 are
known to possess dipole-octupole character, making it a candidate for novel quantum spin …

Fractionalized excitations that emerge from a many-body system have revealed rich physics
and concepts, from composite fermions in two-dimensional electron systems, revealed …

The family of magnetic rare-earth pyrochlore oxides R 2 M 2 O 7 plays host to a diverse
array of exotic phenomena, driven by the interplay between geometrical frustration and spin …

We consider the structure of anisotropic exchange interactions in ytterbium-based insulating
rare-earth magnets built from edge-sharing octahedra. We argue the features of trivalent …

The frustrated pyrochlore magnet Yb 2 Ti 2 O 7 has the remarkable property that it orders
magnetically but has no propagating magnons over wide regions of the Brillouin zone. Here …

A series of Yb 2+ x Ti 2− x O 7− δ doped samples demonstrates the effects of off-
stoichiometry on Yb 2 Ti 2 O 7's structure, properties, and magnetic ground state via x-ray …