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cond-mat.stat-mech1997★ 8 cited
Quantum internal modes of solitons in 1d easy-plane antiferromagnet in strong magnetic field
B. A. Ivanov, A. K. Kolezhuk
In presence of a strong external magnetic field the dynamics of solitons in a one-dimensional easy-plane Heisenberg antiferromagnet exhibits a number of peculiarities. Dynamics of…
cond-mat.stat-mech1997★ 38 cited
A new family of models with exact ground states connecting smoothly the S=1/2 dimer and S=1 Haldane phases of 1D spin chains
A. K. Kolezhuk, H. -J. Mikeska
We investigate the isotropic two-leg S=1/2 ladder with general bilinear and biquadratic exchange interactions between spins on neighboring rungs, and determine the Hamiltonians whi…