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arXiv · cond-mat/9912261

SO(5) Superconductors in a Zeeman Magnetic Field

Jiang-Ping Hu·Shou-Cheng Zhang
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Abstract

The generic symmetry of a system under a uniform Zeeman magnetic field is U(1) x U(1). However, we show that SO(5) models in the presence of a finite chemical potential and a finite Zeeman magnetic field can have a exact SU(2) x U(1) symmetry. This principle can be used to test SO(5) symmetry at any doping level.

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Jiang-Ping Hu, Shou-Cheng Zhang. 1999-12-14. SO(5) Superconductors in a Zeeman Magnetic Field. https://doi.org/10.1103/physrevb.62.r791

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