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Universality Classes of Diagonal Quantum Spin Ladders

M. A. Martin-Delgado·J. Rodriguez-Laguna·G. Sierra
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Abstract

We find the classification of diagonal spin ladders depending on a characteristic integer $N_p$ in terms of ferrimagnetic, gapped and critical phases. We use the finite algorithm DMRG, non-linear sigma model and bosonization techniques to prove our results. We find stoichiometric contents in cuprate $CuO_2$ planes that allow for the existence of weakly interacting diagonal ladders.

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M. A. Martin-Delgado, J. Rodriguez-Laguna, G. Sierra. 2004-11-05. Universality Classes of Diagonal Quantum Spin Ladders. https://doi.org/10.1103/physrevb.72.104435

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