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

We review ground states and excitations of a quantum antiferromagnet on triangular and
other frustrated lattices. We pay special attention to the combined effects of magnetic field h …

The presence of long-range quantum spin correlations underlies a variety of physical
phenomena in condensed-matter systems, potentially including high-temperature …

We use the density matrix renormalization group to perform accurate calculations of the
ground state of the nearest-neighbor quantum spin S= 1/2 Heisenberg antiferromagnet on …

There is a long time gap between the formulation of the basic theory of low-dimensional (low-
D) magnetism as advanced by Ising, Heisenberg and Bethe and its experimental …

We review the interplay of frustration and strong electronic correlations in quasi-two-
dimensional organic charge transfer salts, such as (BEDT-TTF) 2 X and Et n Me 4− n Pn [Pd …

Quantum magnets have occupied the fertile ground between many-body theory and low-
temperature experiments on real materials since the early days of quantum mechanics …

A theoretical overview of the phenomenon of spontaneous magnon decays in quantum
antiferromagnets is presented. The intrinsic zero-temperature damping of magnons in …

Magnetic, thermodynamic, neutron diffraction and inelastic neutron scattering are used to
study spin correlations in the easy-axis XXZ triangular lattice magnet K 2 Co (SeO 3) 2 …

We present a comprehensive study of the dynamical properties of the quantum Heisenberg
antiferromagnet on a triangular lattice within the framework of spin-wave theory. The distinct …