Abstract
The magnetic properties of the model introduced by Aharony, Birgeneau, Coniglio, Kastner and Stanley [Phys. Rev. Lett. 60, 1330 (1988)] agree with the observed phase diagram of La2−x (Sr) x CuO 4 at zero temperature. The holes are created by doping-induced magnetic frustration on the otherwise pure anti-ferromagnetic XY (n = 2) spin system. The ferromagnetic bonds act as a seed for the creation of vortices or anti-vortices and form bound vortex/anti-vortex pairs below the Kosterlitz-Thouless transition temperature. This serves as a real space pairing mechanism with a high magnetic-induced binding energy between the holes, which have created the vortex and anti-vortex excitations. Our results indicate that the “spinon-holon” version of the RVB and “spin-bipolaron” are different interpretations of the same underlying phenomenon.
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References
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© 1990 Kluwer Academic Publishers
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Corsten, G., Liem, C., Blumenfeld, R., Jan, N., Bowen, C. (1990). Vortex-Antivortex Pairing of Holes in Frustrated XY Spin Systems. In: Stanley, H.E., Ostrowsky, N. (eds) Correlations and Connectivity. NATO ASI Series, vol 188. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2157-3_11
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DOI: https://doi.org/10.1007/978-94-009-2157-3_11
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