Magnetization plateaux in dimerized spin ladder arrays

Abstract

We investigate the ground state magnetization plateaux appearing in spin 1/2 two-leg ladders built up from dimerized antiferromagnetic Heisenberg chains and dimerized zig-zag interchain couplings. Using both Abelian bosonization and Lanczos methods we find that the system yields rather unusual plateaux and exhibits massive and massless phases for specific choices or ``tuning'' of exchange interactions. The relevance of this behavior in the study of NH_4CuCl_3 is discussed.

9 pages, RevTeX, 11 postscript figures

References in corpus (10)

• Magnetization Plateaux in N-Leg Spin Ladders
• Incommensurate spin correlations in Heisenberg spin-1/2 zig-zag ladders
• Magnetization Curves of Antiferromagnetic Heisenberg Spin-1/2 Ladders
• The Quasi-1D S=1/2 Antiferromagnet Cs2CuCl4 in a Magnetic Field
• Magnetic Properties of Zig-Zag Ladders
• Correlation amplitude for S=1/2 XXZ spin chain in the critical region
• Massive and Massless Behavior in Dimerized Spin Ladders
• Metamagnetism in the XXZ model with next-to-nearest-neighbor coupling
• Ground State Magnetization of Polymerized Spin Chains
• Phase Diagram of the 2-Leg Heisenberg Ladder with Alternating Dimerization

Cited by in corpus (8)

• Quantum magnetization plateaux of an anisotropic ferrimagnetic spin chain
• Quasi-periodic spin chains in a magnetic field
• Momentum and Energy Dependent Resolution Function of the ARCS Neutron Chopper Spectrometer at High Momentum Transfer: Comparing Simulation and Experimen
• Thermal Properties of Rung Disordered Two-leg Quantum Spin Ladders: Quantum Monte Carlo Study
• Magnetization process in a frustrated plaquette dimerized ladder
• Honeycomb Heisenberg Spin Ladder: Unusual Ground State and Thermodynamic Properties
• Thermodynamic properties of disordered quantum spin ladders
• Fermi surface as a quantum critical manifold: gaplessness, order parameter, and scaling in $d$-dimensions