Magnetization plateaus of an exactly solvable spin-1 Ising-Heisenberg diamond chain

The spin-1 Ising-Heisenberg diamond chain in a magnetic field is exactly solved by a rigorous treatment based on the transfer-matrix method. An exact ground-state phase diagram includes in total three unconventional quantum ground states with a quantum entanglement of the decorating spin-1 Heisenber...

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Bibliographic Details
Published in:arXiv.org 2014-06
Main Authors: Ananikian, Nerses, Strecka, Jozef, Hovhannisyan, Vahan
Format: Article
Language:English
Subjects:
Broken symmetry
Chains
Diamonds
Dimers
Ground state
Ising model
Magnetic fields
Magnetic saturation
Magnetization
Magnetization curves
Phase diagrams
Quantum entanglement
Quantum mechanics
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Summary:The spin-1 Ising-Heisenberg diamond chain in a magnetic field is exactly solved by a rigorous treatment based on the transfer-matrix method. An exact ground-state phase diagram includes in total three unconventional quantum ground states with a quantum entanglement of the decorating spin-1 Heisenberg dimers apart from two ground states with a classical spin arrangement. It is evidenced that all three values of the magnetization allowed for the spin-1 diamond chain without translationally broken symmetry by the Oshikawa-Yamanaka-Affleck criterion can become evident in an outstanding stepwise magnetization curve with three intermediate plateaus at zero, one-third, and two-thirds of the saturation magnetization.
ISSN:2331-8422
DOI:10.48550/arxiv.1406.0999