Spin-Wave Description of Haldane-gap antiferromagnets

Abstract

Modifying the conventional antiferromagnetic spin-wave theory which is plagued by the difficulty of the zero-field sublattice magnetizations diverging in one dimension, we describe magnetic properties of Haldane-gap antiferromagnets. The modified spin waves, constituting a grand canonical bosonic ensemble so as to recover the sublattice symmetry, not only depict well the ground-state correlations but also give useful information on the finite-temperature properties.

to be published in J. Phys. Soc. Jpn. Vol. 72, No. 4 (2003)

References in corpus (15)

• Surprises on the Way from 1D to 2D Quantum Magnets: the Novel Ladder Materials
• Magnetization plateaus in spin chains: ``Haldane gap'' for half-integer spins
• Cluster algorithms for general-S quantum spin systems
• Thermodynamic Properties of Heisenberg Ferrimagnetic Spin Chains: Ferromagnetic-Antiferromagnetic Crossover
• Experimental Evidence of a Haldane Gap in an S = 2 Quasi-linear Chain Antiferromagnet
• Intrinsic double-peak structure of the specific heat in low-dimensional quantum ferrimagnets
• Quantum Phase Transition in the Frustrated Heisenberg Antiferromagnet
• Spin Chains with Periodic Array of Impurities
• Coexistence of Haldane gap excitations and long range antiferromagnetic order in mixed-spin nickelates R_2 Ba Ni O_5
• Spin-Wave Description of Nuclear Spin-Lattice Relaxation in Mn_{12}O_{12} Acetate
• Characterization of ferrimagnetic Heisenberg chains according to the constituent spins
• Alternating spin chains with singlet ground states
• Magnetic Double Structure for S=1, 1/2 Mixed-Spin Systems
• Low-Temperature Properties of Quasi-One-Dimensional Molecule-Based Ferromagnets
• Significance of the direct relaxation process in the low-energy spin dynamics of a one-dimensional ferrimagnet NiCu(C_7H_6N_2O_6)(H_2O)_3 2H_2O

Cited by in corpus (9)

• Bosonic representation of one-dimensional Heisenberg ferrimagnets
• Discrete antiferromagnetic spin-wave excitations in the giant ferric wheel Fe18
• Quantized antiferromagnetic spin waves in the molecular Heisenberg ring CsFe${}_8$
• Low-energy structure of the intertwining double-chain ferrimagnets A_3_Cu_3_(PO_4_)_4_ (A=Ca,Sr,Pb)
• Fermionic versus bosonic descriptions of one-dimensional spin-gapped antiferromagnets
• Static and Dynamic Properties of Antiferromagnetic Heisenberg Ladders: Fermionic versus Bosonic Approaches
• Nuclear Magnetic Relaxation in the Haldane-Gap Antiferromagnet Ni(C_2_H_8_N_2_)_2_NO_2_(ClO_4_)
• Breakdown of the conventional spin-wave dynamics and its double-constraint modification in the spin-$\frac{1}{2}$ triangular-prism Heisenberg antiferromagnet
• Low-dimensional Heisenberg magnets: Riemann zeta function regularization