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Stripe Formation within SO(5) Theory

M. Veillette·Ya. B. Bazaliy·A. J. Berlinsky·C. Kallin
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Abstract

We study the formation of stripe order within the SO(5) theory of high T_c superconductivity. We show that spin and charge modulations arise as a result of the competition between a local tendency to phase separate and the long-range Coulomb interaction. This frustrated phase separation leads to hole-rich and hole-poor regions which are respectively superconducting and antiferromagnetic. A rich variety of microstructures ranging from droplet and striped to inverted-droplet phases are stabilized, depending on the charge carrier concentration. We show that the SO(5) energy functional favors non-topological stripes.

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M. Veillette, Ya. B. Bazaliy, A. J. Berlinsky, C. Kallin. 1999-04-12. Stripe Formation within SO(5) Theory. https://arxiv.org/abs/cond-mat/9812282

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