In the local or itinerant extreme, magnetic excitations can be described by the Heisenberg
model which treats electron spins as localized moments, or by the itinerant-electron model …

Magnetic excitations in the isostructural spin-dimer systems Sr 3 Cr 2 O 8 and Ba 3 Cr 2 O 8
are probed by means of high-field electron spin resonance at subterahertz frequencies …

Stable bound quantum states are ubiquitous in nature. Mostly, they result from the
interaction of only pairs of particles, so called two-body interactions, even when large …

The temperature dependence of the gapped triplet excitations (triplons) in the 2D Shastry-
Sutherland quantum magnet SrCu 2 (BO 3) 2 is studied by means of inelastic neutron …

Unlike most quantum systems which rapidly become incoherent as temperature is raised,
strong correlations persist at elevated temperatures in S= 1 2 dimer magnets, as revealed by …

We report on ultrasound and magnetization studies in three-dimensional, spin-dimerized Sr
3 Cr 2 O 8 as a function of temperature and external magnetic field up to 61 T. It is well …

In this paper we build a holographic model of paramagnetism/antiferromagnetism phase
transition, which is realized by introducing two real antisymmetric tensor fields coupling to …

The dynamics in quantum magnets can often be described by effective models with bosonic
excitations obeying a hard-core constraint. Such models can be systematically derived by …

The novel quantum magnet BaCu 2 V 2 O 8 was recently discovered to be a rare physical
realization of a one-dimensional antiferromagnetic-ferromagnetic dimerized chain which …

The magnetic susceptibility of the gapped quantum spin liquid compound (C 4 H 12 N 2) Cu
2 Cl 6 and its chemically disordered derivatives (C 4 H 12 N 2) Cu 2 (Cl 1− x Br x) 6 are …