most citedEnergy of bond defects in quantum spin chains obtained from local approximations and from exact diagonalization

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cond-mat.mtrl-sci2007★ 5 cited

Energy of bond defects in quantum spin chains obtained from local approximations and from exact diagonalization

V. L. Libero, K. Capelle, F. C. Souza +1

We study the influence of ferromagnetic and antiferromagnetic bond defects on the ground-state energy of antiferromagnetic spin chains. In the absence of translational invariance,…