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Magnetic properties of SO(5) superconductivity

M. Juneau·R. MacKenzie·M. -A. Vachon
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Abstract

The distinction between type I and type II superconductivity is re-examined in the context of the SO(5) model recently put forth by Zhang. Whereas in conventional superconductivity only one parameter (the Ginzburg-Landau parameter $κ$) characterizes the model, in the SO(5) model there are two essential parameters. These can be chosen to be $κ$ and another parameter, $β$, related to the doping. There is a more complicated relation between $κ$ and the behavior of a superconductor in a magnetic field. In particular, one can find type I superconductivity, even when $κ$ is large, for appropriate values of $β$.

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M. Juneau, R. MacKenzie, M. -A. Vachon. 2002-02-22. Magnetic properties of SO(5) superconductivity. https://doi.org/10.1006/aphy.2002.6263

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