50 citations · 275 across the 20 of their papers we have counts for
Showing 2007 · cond-mat.mtrl-sciShow all
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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,…
cond-mat.mtrl-sci2007★ 28 cited
Energy gaps and interaction blockade in confined quantum systems
K. Capelle, M. Borgh, K. Karkkainen +1
Many-body effects in confined quantum systems pose a challenging problem due to the simultaneous presence of particle-particle interactions and spatial inhomogeneity. Here we inves…