The quantum J1-J1′-J2 spin-1 Heisenberg model: Influence of the interchain coupling on the ground-state magnetic ordering in 2D

R. F. Bishop, P. H Y Li, R. Darradi, J. Richter

    Research output: Contribution to journalArticlepeer-review

    156 Downloads (Pure)

    Abstract

    We study the phase diagram of the isotropic J1-J1′-J2 Heisenberg model for spin-1 particles on an anisotropic square lattice, using the coupled-cluster method. We find no evidence for an intermediate phase between the Néel and stripe states, as compared with all previous results for the corresponding spin-1/2 case. However, we find a quantum tricritical point at J1′/J1≈0. 66±0.03, J2/J1≈0.35±0.02, where a line of second-order phase transitions between the quasi-classical Néel and stripe-ordered phases (for J1′/J1≲0.66) meets a line of first-order phase transitions between the same two states (for J1′/J1≳0.66).
    Original languageEnglish
    Article number47004 (6pp)
    JournalEurophysics Letters
    Volume83
    DOIs
    Publication statusPublished - 2008

    Fingerprint

    Dive into the research topics of 'The quantum J1-J1′-J2 spin-1 Heisenberg model: Influence of the interchain coupling on the ground-state magnetic ordering in 2D'. Together they form a unique fingerprint.

    Cite this