Low-Energy Structure of Heisenberg Ferrimagnetic Spin Chains
arXiv:cond-mat/9810113 · doi:10.1143/JPSJ.67.3711
Abstract
Static and dynamic structure factors of Heisenberg ferrimagnetic spin chains are numerically investigated. There exist two distinct branches of elementary excitations, which exhibit ferromagnetic and antiferromagnetic aspects. The ferromagnetic feature is smeared out with the increase of temperature, whereas the antiferromagnetic one persists up to higher temperatures. The scattering intensity is remarkably large at lower boundaries of the ferromagnetic and antiferromagnetic spectra. All these observations are consistent with the ferromagnetic-to-antiferromagnetic crossover in the thermal behavior which has recently been reported.
3 pages, 5 PS figures, to appear in J. Phys. Soc. Jpn. Vol. 67, No. 11 (1998)
References in corpus (9)
- Thermodynamic Properties of Heisenberg Ferrimagnetic Spin Chains: Ferromagnetic-Antiferromagnetic Crossover
- Thermodynamics of the (1,1/2) Ferrimagnet in Finite Magnetic Fields
- Magnetic Properties of a Quantum Ferrimagnet: NiCu(pba)(D_2O)_3 . 2D_2O
- Spin Chains with Periodic Array of Impurities
- Magnetic and Critical Properties of Alternating Spin Heisenberg Chain in a Magnetic Field
- Spin-wave series for quantum one-dimensional ferrimagnets
- Ground-State and Thermodynamic Properties of the Quantum Mixed Spin-1/2-1/2-1-1 Chain
- Mixed-Spin Ladders and Plaquette Spin Chains
- Alternating-Spin Ladders
Cited by in corpus (16)
- Quantum magnetization plateaux of an anisotropic ferrimagnetic spin chain
- Critical Behavior of Anisotropic Heisenberg Mixed-Spin Chains in a Field
- Bosonic representation of one-dimensional Heisenberg ferrimagnets
- Thermodynamic properties of ferromagnetic mixed-spin chain systems
- Multi-plateau magnetization curves of one-dimensional Heisenberg ferrimagnets
- Low-temperature thermodynamics of one-dimensional alternating-spin Heisenberg ferromagnets
- Simulated nuclear spin-lattice relaxation in Heisenberg ferrimagnets: Indirect observation of quadratic dispersion relations
- Modified spin-wave description of the nuclear spin relaxation in ferrimagnetic Heisenberg chains
- Ferrimagnetic and Long Period Antiferromagnetic Phases in High Spin Heisenberg Chains with D-Modulation
- Breakdown of a Magnetization Plateau due to Anisotropy in Heisenberg Mixed-Spin Chains
- Nuclear Spin-Lattice Relaxation in One-Dimensional Heisenberg Ferrimagnets: Three-Magnon versus Raman Processes
- 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
- Stability and Absence of a Tower of States in Ferrimagnets
- Ground State Property of an Alternating Spin Ladder Involving Two Kinds of Inter-Chain Interactions
- Nuclear spin relaxation in ordered bimetallic chain compounds
- Generalization of the Affleck-Kennedy-Lieb-Tasaki Model for Quantum Ferromagnetism