On a large class of lattices (such as the sawtooth chain, the kagome and the pyrochlore
lattices), the quantum Heisenberg and the repulsive Hubbard models may host a completely …

Ground-state and finite-temperature properties of the exactly solvable mixed spin-1/2 Ising–
Heisenberg planar model composed of identical trigonal bipyramids that are arranged into a …

A general technique of exact calculation of any correlation functions for the special class of
one-dimensional spin models containing small clusters of quantum spins assembled to a …

The geometrically frustrated spin-1/2 Ising-Heisenberg model on triangulated Husimi lattices
is exactly solved by combining the generalized star-triangle transformation with the method …

The spin-1/2 Ising-Heisenberg model on a triangulated Husimi lattice is exactly solved in a
magnetic field within the framework of the generalized star-triangle transformation and the …

Magnetic field-dependent heat capacity measurements on the tunable molecular magnet Cu
9 Cl 2 (cpa) 6, a metal organic framework (MOF) based on copper (II) ions and …

Chemical modifications of the magnetic metal organic framework (MOF) Cu 9 X 2 (cpa) 6·
42H 2 O (X= F, Cl, Br; cpa= anion of 2-carboxypentonicacid) have been investigated as a …

Here we consider the Ising-Heisenberg model in the expanded Kagomé lattice, also known
as triangle-dodecagon (3–12) or star lattice. This model can still be understood as a …

We study the spin-1/2 Ising-XXZ model on a decorated honeycomb lattice composed of five
spins per unit cell, one Ising spin, and four Heisenberg spins. This model involving the …

The spin frustrated magnetism of the 2-D molecular magnet material Cu 9 Cl 2 (cpa) 6 (cpa=
anion of 2-carboxypentonic acid), abbreviated as CPA, has been the subject of experimental …