Spin-1/2 XXZ diamond chain within the Jordan-Wigner fermionization approach

Details Spin-1/2 XXZ diamond chain within the Jordan-Wigner fermionization approach Spin-1/2 XXZ diamond chain within the Jordan-Wigner fermionization approach

2011-05-05

arxiv.org/abs/1105.1104v1

Acta Phys. Pol. A 118 (2010) 978-979

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, 1 figure, presented at 14th Czech and Slovak Conference on Magnetism 6.-9. July 2010, Kosice, Slovakia

Scientific paper

The spin-1/2 XXZ diamond chain is considered within the Jordan-Wigner fermionization. The fermionized Hamiltonian contains the interacting terms which are treated within the Hartree-Fock approximation. We obtain the ground-state magnetization curve of the model for some particular cases and compare the results with the exact diagonalization data for finite chains of 30 spins and known exact results. We also analyze the validity of the suggested approximation.

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