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arXiv · 1406.0999

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

Nerses Ananikian·Jozef Strecka·Vahan Hovhannisyan
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Abstract

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.

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Nerses Ananikian, Jozef Strecka, Vahan Hovhannisyan. 2014-06-04. Magnetization plateaus of an exactly solvable spin-1 Ising-Heisenberg diamond chain. https://doi.org/10.1016/j.ssc.2014.06.015

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