114 citations · 440 across the 10 of their papers we have counts for
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cond-mat.str-el1997★ 111 cited
Non-Haldane Spin Liquid Models with Exact Ground States
A. K. Kolezhuk, H. -J. Mikeska
We present a family of spin ladder models which admit exact solution for the ground state and exhibit non-Haldane spin liquid properties as predicted recently by Nersesyan and Tsve…
cond-mat.stat-mech1997★ 114 cited
Elementary Excitations of Heisenberg Ferrimagnetic Spin Chains
Shoji Yamamoto, S. Brehmer, H. -J. Mikeska
We numerically investigate elementary excitations of the Heisenberg alternating-spin chains with two kinds of spins 1 and 1/2 antiferromagnetically coupled to each other. Employing…
cond-mat.str-el1997★ 20 cited
Elementary excitations in the gapped phase of a frustrated S=1/2 spin ladder: from spinons to the Haldane triplet
S. Brehmer, A. K. Kolezhuk, H. -J. Mikeska +1
We use the variational matrix-product ansatz to study elementary excitations in the S=1/2 ladder with additional diagonal coupling, equivalent to a single S=1/2 chain with alternat…