Tôru Sakai

Multiplateau magnetization curves of one-dimensional Heisenberg ferrimagnets

Ground-state magnetization curves of ferrimagnetic Heisenberg chains of alternating spins

CRITICAL BEHAVIOR OF ANISOTROPIC HEISENBERG MIXED-SPIN CHAINS IN A FIELD

S

Characterization of ferrimagnetic Heisenberg chains according to the constituent spins

and

Breakdown of a magnetization plateau due to anisotropy in Heisenberg mixed-spin chains

s

Magnetization Plateau in the Frustrated Spin Ladder

are numerically investigated. Calculating several cases of

The field-induced gap due to four-spin exchange in a spin ladder

(S,s)

Coexistent quantum and classical aspects of magnetization plateaux in alternating-spin chains

, we conclude that the spin-

Magnetic properties of frustrated spin ladder

(S,s)

Low-Temperature Properties of Quasi-One-Dimensional Molecule-Based Ferromagnets

chain generally exhibits

Re-Entrant Quantum Phase Transitions in Antiferromagnetic Spin-1 Ladders

2s