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 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 collective behaviour of interacting magnetic moments can be strongly influenced by the
topology of the underlying lattice. In geometrically frustrated spin systems, interesting chiral …

In a recent paper [JS Gardner et al., Phys. Rev. Lett. 82, 1012 (1999)] it was found that the Tb
3+ magnetic moments in the Tb 2 Ti 2 O 7 antiferromagnetic pyrochlore lattice of corner …

Inspired by the recent discovery of a new instability towards a chiral phase of the classical
Heisenberg model on the kagome lattice, we propose a specific chiral spin liquid that …

Some frustrated pyrochlore antiferromagnets, such as Y 2 M o 2 O 7, show a spin-freezing
transition and magnetic irreversibilities below a temperature T f similar to what is observed in …

Among various parent compounds of iron pnictide superconductors, EuFe 2 As 2 stands out
due to the presence of both spin density wave of Fe and antiferromagnetic (AFM) ordering of …

Static and dynamic magnetic correlations in the geometrically frustrated pyrochlore
antiferromagnet Y 2 M o 2 O 7 have been studied using neutron scattering. The material is …