Magnetization process and low-temperature thermodynamics of a spin-1/2 Heisenberg octahedral chain
arXiv:1706.06370 · doi:10.1016/j.physb.2017.09.118
Abstract
Low-temperature magnetization curves and thermodynamics of a spin-1/2 Heisenberg octahedral chain with the intraplaquette and monomer-plaquette interactions are examined within a two-component lattice-gas model of hard-core monomers, which takes into account all low-lying energy modes in a highly frustrated parameter space involving the monomer-tetramer, localized many-magnon and fully polarized ground states. It is shown that the developed lattice-gas model satisfactorily describes all pronounced features of the low-temperature magnetization process and the magneto-thermodynamics such as abrupt changes of the isothermal magnetization curves, a double-peak structure of the specific heat or a giant magnetocaloric effect.
6 pages, 3 figures, contribution to SCES2017 conference
References in corpus (9)
- Strongly correlated flat-band systems: The route from Heisenberg spins to Hubbard electrons
- Exact low-temperature behavior of kagome antiferromagnet at high fields
- Flat Bands Under Correlated Perturbations
- Universal low-temperature behavior of frustrated quantum antiferromagnets in the vicinity of the saturation field
- Cooling through quantum criticality and many-body effects in condensed matter and cold gases
- Diversity of quantum ground states and quantum phase transitions of a spin-1/2 Heisenberg octahedral chain
- Exact non-magnetic ground state and residual entropy of S = 1/2 Heisenberg diamond spin lattices
- Semiquantitative theory for high-field low-temperature properties of a distorted diamond spin chain
- Ground States of Spin-1/2 Heisenberg Antiferromagnets with Frustration on a Diamond-Like Decorated Square Lattice
Cited by in corpus (11)
- Frustrated magnetism of spin-1/2 Heisenberg diamond and octahedral chains as a statistical-mechanical monomer-dimer problem
- Cluster-based Haldane phases, bound magnon crystals and quantum spin liquids of a mixed spin-1 and spin-1/2 Heisenberg octahedral chain
- Magnetic and thermodynamic properties of the octanuclear nickel phosphonate-based cage
- Ground state and thermodynamic properties of spin-1/2 isosceles Heisenberg triangles for V-like magnetic molecules
- Magnetic properties of a capped kagome molecule with 60 quantum spins
- The specific heat and magnetic properties of a spin-1/2 ladder including butterfly-shaped unit blocks
- Enhanced magnetocaloric effect in a mixed spin-(1/2, 1) Ising-Heisenberg two-leg ladder with strong-rung interaction
- Frustrated quantum Heisenberg double-tetrahedral and octahedral chains at high magnetic fields
- Investigation of entanglement measures across the magnetization process of a highly frustrated spin-1/2 Heisenberg octahedral chain as a new paradigm of the localized-magnon approach
- Towards lattice-gas description of low-temperature properties above the Haldane and cluster-based Haldane ground states of a mixed spin-(1,1/2) Heisenberg octahedral chain
- Unveiling the degeneracy of bound magnon crystals from magnetic and thermodynamic features of the spin-1/2 Heisenberg octahedral chain