110 citations · 378 across the 15 of their papers we have counts for
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How to distinguish the Haldane/Large-D state and the intermediate-D state in an S=2 quantum spin chain with the XXZ and on-site anisotropies
Kiyomi Okamoto, Takashi Tonegawa, Hiroki Nakano +3
We numerically investigate the ground-state phase diagram of an S=2 quantum spin chain with the and on-site anisotropies described by ${\mathcal H}=\sum_j (S_j^x S_{j+1}^x+S_…
Finite-Field Ground State of the S=1 Antiferromagnetic-Ferromagnetic Bond-Alternating Chain
Takashi Tonegawa, Kiyomi Okamoto, Makoto Kaburagi
We investigate the finite-field ground state of the S=1 antiferromagnetic-ferromagnetic bond-alternating chain described by the Hamiltonian ${\calH}=\sum\nolimits_{\ell}\bigl\{\vec…
Ground-State Phase Diagram of Frustrated Anisotropic Quantum Spin Chains
T. Hikihara, M. Kaburagi, H. Kawamura
Recent studies on the frustrated quantum spin chains with easy-plane anisotropy are reviewed. We are particularly interested in novel "chiral" phases characterized by the spontaneo…