The spin ice materials, including Ho 2 Ti 2 O 7 and Dy 2 Ti 2 O 7, are rare-earth pyrochlore
magnets which, at low temperatures, enter a constrained paramagnetic state with an …

A frustrated system is one whose symmetry precludes the possibility that every pairwise
interaction (“bond”) in the system can be satisfied at the same time. Such systems are …

The current state of efforts to understand the phenomenon of geometric magnetic frustration
is described in the context of several key materials. All are transition metal oxides which …

A ferromagnet with spin anisotropies on the two-dimensional (2D) kagomé lattice is
theoretically studied. This is a typical example of the flat-band ferromagnet. The Berry phase …

The fluidity of water in confined geometries is relevant to processes ranging from tribology to
protein folding, and its molecular mobility in pores and slits has been extensively studied …

Recent experiments suggest that the Ising pyrochlore magnets Ho 2 Ti 2 O 7 and Dy 2 Ti 2 O
7 display qualitative properties of the nearest-neighbor “spin ice” model. We discuss the …

Crystals are a state of matter characterized by periodic order. Yet, crystalline materials can
harbour disorder in many guises, such as non-repeating variations in composition, atom …

The transport of electrically charged quasiparticles (based on electrons or ions) plays a
pivotal role in modern technology as well as in determining the essential functions of …

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 …

Strongly frustrated magnetism of the metallic pyrochlore oxide Pr 2 Ir 2 O 7 has been
revealed by single crystal study. While Pr 4 f moments have an antiferromagnetic RKKY …