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Charge stripe order from antiphase spin spirals in the spin-Fermion model

Marcello B. Silva Neto
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Abstract

We revisit the ground state of the spin-Fermion model within a semiclassical approximation. We demonstrate that antiphase spin spirals, or pi-spirals, whose chirality alternates between consecutive rows (or columns) of local moments, have, for sufficiently high carrier concentration, lower energy than the traditional Shraiman and Siggia spirals. Furthermore, pi-spirals give rise to modulated hopping, anisotropic 1D transport, and charge density wave formation. Finally, we discuss the relevance of pi-spirals to the physics of charge stripe formation in cuprates, such as La(2-x)Sr(x)CuO4.

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Marcello B. Silva Neto. 2006-09-21. Charge stripe order from antiphase spin spirals in the spin-Fermion model. https://doi.org/10.1103/physrevb.76.033103

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