The ground-state magnetic ordering of the spin-1/2 frustrated J1-J2 XXZ model on the square lattice

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dc.creatorDarradi, R.
dc.creatorRichter, J.
dc.creatorSchulenburg, J.
dc.creatorBishop, R. F.
dc.creatorLi, P. H. Y.
dc.date2008-08-20
dc.date2008-09-15
dc.date.accessioned2026-07-07T12:42:38Z
dc.date.available2026-07-07T12:42:38Z
dc.descriptionUsing the coupled-cluster method for infinite lattices and the exact diagonalization method for finite lattices, we study the influence of an exchange anisotropy Delta on the ground-state phase diagram of the spin-1/2 frustrated J1-J2 XXZ antiferromagnet on the square lattice. We find that increasing Delta>1 (i.e. an Ising type easy-axis anisotropy) as well as decreasing Delta<1 (i.e. an XY type easy-plane anisotropy) both lead to a monotonic shrinking of the parameter region of the magnetically disordered quantum phase. Finally, at Delta~1.9 this quantum phase disappears, whereas in pure XY limit (Delta=0) there is still a narrow region around J2 =0.5J1 where the quantum paramagnetic ground-state phase exists.
dc.description4 pages, 6 figures, paper accepted for the proceedings of the conference HFM 2008
dc.identifierhttps://arxiv.org/abs/0808.2743
dc.identifierhttp://arxiv.org/abs/0808.2743
dc.identifierJournal of Physics: Conference Series 145 (2009) 012049
dc.identifierdoi:10.1088/1742-6596/145/1/012049
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220145
dc.subjectStrongly Correlated Electrons
dc.titleThe ground-state magnetic ordering of the spin-1/2 frustrated J1-J2 XXZ model on the square lattice
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