Multi-plateau magnetization curves of one-dimensional Heisenberg ferrimagnets

Abstract

Ground-state magnetization curves of ferrimagnetic Heisenberg chains of alternating spins $S$ and $s$ are numerically investigated. Calculating several cases of $(S,s)$, we conclude that the spin-$(S,s)$ chain generally exhibits $2s$ magnetization plateaux even at the most symmetric point. In the double- or more-plateau structure, the initial plateau is generated on a classical basis, whereas the higher ones are based on a quantum mechanism.

6 pages, 6 figures embedded, to appear in Phys. Rev. B 01 August 2000

References in corpus (4)

• Schwinger boson mean field theory of the Heisenberg Ferrimagnetic Spin Chain
• Critical Behavior of Anisotropic Heisenberg Mixed-Spin Chains in a Field
• Characterization of ferrimagnetic Heisenberg chains according to the constituent spins
• Simulated nuclear spin-lattice relaxation in Heisenberg ferrimagnets: Indirect observation of quadratic dispersion relations

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