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 …

In LiHo x Y 1− x F 4, the magnetic Holmium Ho 3+ ions behave as effective Ising spins that
can point parallel or antiparallel to the crystalline c-axis. The predominant inter-Ho 3+ …

Motivated by recent experimental and theoretical progress on the Er 2 Ti 2 O 7 pyrochlore
XY antiferromagnet, we study the general problem of quantum order-by-disorder in …

It is a salient experimental fact that a large fraction of candidate spin liquid materials freeze
as the temperature is lowered. The question naturally arises whether such freezing is …

We report a magneto-optical Kerr effect study of the collective magnetic response of artificial
square spin ice, a lithographically defined array of single-domain ferromagnetic islands. We …

During recent years the interest to frustrated magnets has grown considerably. Such
systems reveal very peculiar properties which distinguish them from standard paramagnets …

The effect of structural disorder is investigated for an XY pyrochlore antiferromagnet with
continuous degeneracy of classical ground states. Two types of disorder—vacancies and …

Geometrical frustration usually arises in systems composed of magnetic moments (spins)
which reside on the sites of a lattice whose antiferromagnetic exchange interactions form …

We investigate in detail the process of adiabatic cooling in the framework of the exactly
solvable antiferromagnetic spin-1 2 Ising model in the presence of the external magnetic …

The emergent gauge field characteristic of the Coulomb phase of spin ice betrays its
existence via pinch points in the spin structure factor S in reciprocal space which takes the …