This article reviews experimental and theoretical work on Bose-Einstein condensation in
quantum magnets. These magnets are natural realizations of gases of interacting bosons …

Spin-lattice effects play an important role in many magnetic materials. In this short review,
we give some examples of such effects studied in low-dimensional, frustrated as well as …

The quantum dimer magnet (QDM) is the canonical example of quantum magnetism. The
QDM state consists of entangled nearest-neighbor spin dimers and often exhibits a field …

Strongly correlated spin systems can be driven to quantum critical points via various routes.
In particular, gapped quantum antiferromagnets can undergo phase transitions into a …

Abstract Two-dimensional (2D) systems with continuous symmetry lack conventional long-
range order because of thermal fluctuations. Instead, as pointed out by Berezinskii, Kosterlitz …

We have successfully synthesized single crystals, solved the crystal structure, and studied
the magnetic properties of a new family of copper halides (C 4 H 14 N 2) Cu 2 X 6 (X= Cl …

We use a generalized spin-wave approach and large-scale quantum Monte Carlo (QMC)
simulations to study the quantum phase diagram and quasiparticle excitations of the S= 1 …

We report on the magnetocaloric effect and ultrasound studies of the frustrated quasi-one-
dimensional spin-1/2 compound LiCuVO 4, evidencing a spin-nematic state. The magnetic …

We report a study of the low-temperature thermal conductivity of NiCl 2-4 SC (NH 2) 2, which
is a spin-1 chain system exhibiting the magnon Bose-Einstein condensation (BEC) in a …

We report on measurements of the sound velocity and attenuation in a single crystal of the
candidate quantum-spin-ice material Yb 2 Ti 2 O 7 as a function of temperature and …