Incommensurate Spin Correlations in Spin-1/2Frustrated Two-Leg Heisenberg Ladders

1998/04/01 by A. A. Nersesyan, Alexander A. Nersesyan, Alexander O. Gogolin +2 · 11 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.81.910

published as Phys. Rev. Lett. 81, 910 (1998). · 4 pages of revtex, 3 figures

arxiv created 1998/04/01 · openalex publication_date 1998/07/27 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We develop a low-energy effective theory for spin- 1/2 frustrated two-leg Heisenberg spin ladders. We obtain a new type of interchain coupling that breaks parity symmetry. In the presence of an XXZ-type anisotropy, this interaction gives rise to a novel ground state, characterized by incommensurate correlations. In the case of a single ladder, this state corresponds to a spin nematic phase. For a frustrated quasi-one-dimensional system of infinitely many weakly coupled chains, this state develops true three-dimensional spiral order. We apply our theory to recent neutron scattering experiments on Cs₂CuCl₄.

Citations

• Bosonization and Strongly Correlated Systems

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• Quantum corrections of the Dzyaloshinskii-Moriya interaction on the spin- (1)/(2) AF-Heisenberg chain in an uniform magnetic field
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