1998/06/30 by A. K. Kolezhuk, Alexei K. Kolezhuk · 30 citations
Materials Science · Mathematics · Physics and Astronomy · #Antiferromagnetism #Combinatorics #Condensed matter physics #Coupling (piping) #Dimer #Geometry #Hexagonal lattice #Lattice (music) #Magnetic field #Magnetism in coordination complexes #Magnetization #Materials science #Mathematics #Nuclear magnetic resonance #Organic and Molecular Conductors Research #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Saturation (graph theory) #Spin (aerodynamics) #Thermodynamics #Zigzag #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.59.4181
published in Physical review. B, Condensed matter 59(6), 4181-4188 (American Physical Society) · serious changes in Sect. II,III, final version to appear in PRB
arxiv created 1998/10/28 · openalex publication_date 1999/02/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
I study a spin system consisting of strongly coupled dimers which are, in turn, weakly coupled in a plane by zigzag interactions. The model can be viewed as the strong-coupling limit of a two-dimensional zigzag chain structure typical, e.g., for the (ac) planes of KCuCl3. It is shown that the magnetization curve in this model has plateaus at (1)/(3) and (2)/(3) of the saturation magnetization, and an additional plateau at (1)/(2); the critical fields are calculated perturbatively. It is argued that for the three-dimensional lattice structure of the KCuCl3 family the plateaus at (1)/(4) and (3)/(4) of the saturation can be favored in a similar way, which might be relevant to the recent experiments on NH4CuCl3 by Shiramura et al., J. Phys. Soc. Jpn. 67, 1548 (1998).