Abstract
We report a combined analytical and density matrix renormalized group study of the antiferromagnetic spin- Heisenberg chain subject to a uniform Dzyaloshinskii-Moriya (DM) interaction and a transverse magnetic field. The numerically determined phase diagram of this model, which features two ordered Ising phases and a critical Luttinger liquid, one with fully broken spin-rotational symmetry, agrees well with the predictions of Garate and Affleck [I. Garate and I. Affleck, Phys. Rev. B 81, 144419 (2010)]. We also confirm the prevalence of the Néel Ising order in the regime of comparable DM and magnetic field magnitudes.
3 More- Received 28 August 2017
DOI:https://doi.org/10.1103/PhysRevB.96.214441
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