Alternating Heisenberg Spin-1/2 Chains in a Transverse Magnetic Field

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dc.creatorMahdavifar, Saeed
dc.creatorAkbari, Alireza
dc.date2007-11-05
dc.date.accessioned2026-07-07T09:29:02Z
dc.date.available2026-07-07T09:29:02Z
dc.descriptionThe ground state phase diagram of the alternating spin-1/2 chains with anisotropic ferromagnetic coupling under the influence of a symmetry breaking transverse magnetic field is studied. We have used the exact diagonalization technique. In the limit where the antiferromagnetic coupling is dominant, we have identified two Ising-type quantum phase transitions. We have calculated two critical fields $h_{c_{1}}$ and $h_{c_{2}}$, corresponding to the transition between different magnetic phases of the system. It is found that the intermediate state ($h_{c_{1}}<h<h_{c_{2}}$) is gapful, describing the stripe-antiferromagnetic phase.
dc.description6 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0711.0623
dc.identifierhttp://arxiv.org/abs/0711.0623
dc.identifierJ. Phys. Soc. Jpn. 77, 024710 (2008)
dc.identifierdoi:10.1143/JPSJ.77.024710
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/157640
dc.subjectStrongly Correlated Electrons
dc.titleAlternating Heisenberg Spin-1/2 Chains in a Transverse Magnetic Field
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