The properties of the ground state of the simplest frustrated system, the dilute Ising chain in a
magnetic field, are rigorously investigated over the entire range of concentrations of charged …

One-dimensional systems with short-range interactions cannot exhibit a long-range order at
nonzero temperature. However, there are some particular one-dimensional models, such as …

A quantum spin-1 2 antiferromagnetic Heisenberg trimerized chain with strong intradimer
and weak monomer-dimer coupling constants is studied using the many-body perturbation …

The ground state of the spin-1/2 Ising–Heisenberg distorted diamond chain in the presence
of an external magnetic field is investigated in the case of the ferromagnetic Ising and …

The spin-1 2 Heisenberg orthogonal-dimer chain is considered within the perturbative
strong-coupling approach, which is developed from the exactly solved spin-1 2 Ising …

The exact solution of the distorted diamond Ising–Hubbard chain is analyzed in the special
limit of infinite on-site electron-electron repulsion, where the two-electron Hubbard dimer …

We consider the spin-1/2 antiferromagnetic Heisenberg model on two one-dimensional
frustrated lattices, a double-tetrahedral chain and an octahedral chain, with almost …

It is quite relevant the extension of decoration transformation for quantum spin models since
most of the real materials could be well described by Heisenberg type models. Here we …

Low-dimensional quantum Heisenberg spin models show exceptionally diverse magnetic
behaviour due to the competition between several factors: strong quantum fluctuations …

We study magnetoelastic properties of a spin-1/2 Ising-Heisenberg diamond chain, whose
elementary unit cell consists of two decorating Heisenberg spins and one nodal Ising spin. It …