Frustrated magnets are materials in which localized magnetic moments, or spins, interact
through competing exchange interactions that cannot be simultaneously satisfied, giving rise …

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 …

Within the past 20 years or so, there has occurred an explosion of interest in the magnetic
behavior of pyrochlore oxides of the type A 2 3+ B 2 4+ O 7, where A is a rare-earth ion and …

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 …

The spin ice compounds Dy2Ti2O7 and Ho2Ti2O7 are highly unusual magnets that
epitomize a set of concepts of great interest in modern condensed matter physics: Their low …

The “Coulomb phase” is an emergent state for lattice models (particularly highly frustrated
antiferromagnets), which have local constraints that can be mapped to a divergence-free …

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 …

Magnetic monopoles have eluded experimental detection since their prediction nearly a
century ago by Dirac. It was recently shown that classical analogues of these enigmatic …