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Ground-State and Thermodynamic Properties of the Quantum Mixed Spin-1/2-1/2-1-1 Chain
Takashi Tonegawa, Toshiya Hikihara, Makoto Kaburagi +3
We investigate both analytically and numerically the ground-state and thermodynamic properties of the quantum mixed spin-1/2-1/2-1-1 chain described by the Hamiltonian $H=\sum_{\el…
One-dimensional Heisenberg antiferromagnet in which two S=1/2 and two S=1 spins are arranged alternatively
T. Tonegawa, T. Hikihara, T. Nishino +3
Ground-state and thermodynamic properties of the one-dimensional Heisenberg antiferromagnet in which two S=1/2 and two S=1 spins are arranged alternatively are studied by a quantum…
Ground-state magnetization curve of a generalized spin-1/2 ladder
Takashi Tonegawa, Takeshi Nishida, Makoto Kaburagi
Employing a method of exact diagonalization for finite-size systems, we investigate the magnetization curve in the ground state of an antiferromagnetic spin-1/2 ladder with additio…