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 …

The discovery of magnetism by the ancient Greeks was enabled by the natural occurrence of
lodestone–a magnetized version of the mineral magnetite. Nowadays, natural minerals …

The natural mineral azurite Cu 3 (CO 3) 2 (OH) 2 is a frustrated magnet displaying unusual
and controversially discussed magnetic behavior. Motivated by the lack of a unified …

Most quantum entanglement investigations are focused on two qubits or some finite (small)
chain structure, since the infinite chain structure is a considerably cumbersome task …

The entanglement quantum properties of a spin-1/2 Ising–Heisenberg model on a
symmetrical diamond chain were analyzed. Due to the separable nature of the Ising-type …

We introduce a quantum Monte Carlo (QMC) method for efficient sign-problem-free
simulations of a broad class of frustrated S= 1/2 antiferromagnets using the basis of spin …

One-dimensional gapped phases that avoid any symmetry breaking have drawn enduring
attention. In this paper, we study such phases in a bond-alternating spin-1 K-Γ chain built of …

Quantum entanglement is one of the most fascinating types of correlation that can be shared
only among quantum systems. The Heisenberg chain is one of the simplest quantum chains …

There are some particular one-dimensional models, such as the Ising-Heisenberg spin
models with a variety of chain structures, which exhibit unexpected behaviors quite similar to …

Abstract Quantum Monte Carlo simulations provide one of the more powerful and versatile
numerical approaches to condensed matter systems. However, their application to frustrated …