Quantum $J_1$--$J_2$ antiferromagnet on the stacked square lattice: Influence of the interlayer coupling on the ground-state magnetic ordering

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dc.creatorSchmalfuss, D.
dc.creatorDarradi, R.
dc.creatorRichter, J.
dc.creatorSchulenburg, J.
dc.creatorIhle, D.
dc.date2006-04-06
dc.date2006-10-17
dc.date.accessioned2026-07-07T07:05:19Z
dc.date.available2026-07-07T07:05:19Z
dc.descriptionUsing the coupled-cluster method (CCM) and the rotation-invariant Green's function method (RGM), we study the influence of the interlayer coupling $J_\perp$ on the magnetic ordering in the ground state of the spin-1/2 $J_1$-$J_2$ frustrated Heisenberg antiferromagnet ($J_1$-$J_2$ model) on the stacked square lattice. In agreement with known results for the $J_1$-$J_2$ model on the strictly two-dimensional square lattice ($J_\perp=0$) we find that the phases with magnetic long-range order at small $J_2< J_{c_1}$ and large $J_2> J_{c_2}$ are separated by a magnetically disordered (quantum paramagnetic) ground-state phase. Increasing the interlayer coupling $J_\perp>0$ the parameter region of this phase decreases, and, finally, the quantum paramagnetic phase disappears for quite small $J_\perp \sim 0.2 ... 0.3 J_1$.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0604172
dc.identifierhttp://arxiv.org/abs/cond-mat/0604172
dc.identifierPhys.Rev.Lett. 97, 157201 (2006)
dc.identifierdoi:10.1103/PhysRevLett.97.157201
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109630
dc.subjectStrongly Correlated Electrons
dc.titleQuantum $J_1$--$J_2$ antiferromagnet on the stacked square lattice: Influence of the interlayer coupling on the ground-state magnetic ordering
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