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Flux tubes, visons, and vortices in spin-charge separated superconductors

M. Franz·Z. Tesanovic
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Abstract

The idea of spin-charge separation in cuprate superconductors has been recently energized by Senthil and Fisher who formulated a Z_2 gauge theory and, within its context, proposed a ``vison detection'' experiment as a test for topological order in a sample with multiply connected geometry. Here we show that the same experiment can be performed to test for the spin-charge separation in U(1) [but not in SU(2)] theory and argue that vortex core spectroscopy can in fact distinguish between the different symmetries of the fictitious gauge field.

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M. Franz, Z. Tesanovic. 2000-10-27. Flux tubes, visons, and vortices in spin-charge separated superconductors. https://doi.org/10.1016/s0921-4534(01)00193-9

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