A microscopic model for a class of mixed-spin quantum antiferromagnets

Abstract

We propose a microscopic model that describes the magnetic behavior of the mixed-spin quantum systems R${}_2$BaNiO${}_5$ (R= magnetic rare earth). An evaluation of the properties of this model by Quantum Monte Carlo simulations shows remarkable good agreement with the experimental data and provides new insight into the physics of mixed-spin quantum magnets.

revised version to be published in Phys. Rev. B

References in corpus (3)

• A Novel Longitudinal Mode in the Coupled Quantum Chain Compound KCuF3
• Monte Carlo Study of the S=1/2 and S=1 Heisenberg Antiferromagnet on a Spatially Anisotropic Square Lattice
• Energy separation of single-particle and continuum states in a S=1/2 weakly-coupled chains antiferromagnet

Cited by in corpus (4)

• Magnetic excitations in weakly coupled spin dimers and chains material Cu2Fe2Ge4O13
• Anomalous percolation and quantum criticality in diluted rare-earth nickelates
• The antiferromagnetic/paramagnetic transition in mixed-spin compounds R2BaNiO5
• A quantum Monte Carlo algorithm for arbitrary high-spin Hamiltonians