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Spin-only approach to quantum magnetism in the ordered stripe state

J. Tworzydlo·C. N. A. van Duin·J. Zaanen
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Abstract

It has been argued that the spin-dynamics in cuprate superconductors is governed by the proximity to a zero-temperature critical point. This critical point would be related to a transition from the superconducting phase to an ordered stripe state. Using a coupled spin-ladder model, we investigate to what extent the strong quantum spin-fluctuations in the ordered stripe state can be attributed to the spin sector. For the bond-centered stripes, we find that our spin-only model can account for the observed spin-fluctuations. For site-ordered stripes, coupling of the spin and charge sector is needed.

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J. Tworzydlo, C. N. A. van Duin, J. Zaanen. 1998-08-04. Spin-only approach to quantum magnetism in the ordered stripe state. https://arxiv.org/abs/cond-mat/9808034

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