Abstract The Bose–Einstein condensate (BEC) is a fascinating state of matter predicted to
occur for particles obeying Bose statistics. Although the BEC has been observed with …

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

We present a scheme to perform an iterative variational optimization with infinite projected
entangled-pair states, a tensor network ansatz for a two-dimensional wave function in the …

Suitable for researchers and graduate students in physics and material science," Physical
Acoustics in the Solid State" reviews the modern aspects in the field, including many …

Band insulators appear in a crystalline system only when the filling—the number of electrons
per unit cell and spin projection—is an integer. At fractional filling, an insulating phase that …

We simulate the Shastry-Sutherland model in two dimensions by means of infinite projected
entangled-pair states (iPEPS)—a variational tensor network method where the accuracy can …

The 2-dimensional layered oxide material SrCu2 (BO3) 2, long studied as a realization of
the Shastry-Sutherland spin topology, exhibits a range of intriguing physics as a function of …

The magnetic properties of SrCu 2 (BO 3) 2 are reviewed from a theoretical point of view.
SrCu 2 (BO 3) 2 is a new two-dimensional spin gap system and its magnetic properties are …

The magnetization process of the orthogonal-dimer antiferromagnet SrCu 2 (BO 3) 2 is
investigated in high magnetic fields of up to 118 T. A 1/2 plateau is clearly observed in the …

Magnetic clusters, ie, assemblies of a finite number (between two or three and several
hundred) of interacting spin centers which are magnetically decoupled from their …