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

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

2006-09-21

arxiv.org/abs/cond-mat/0609539v1

Physical Review B 76, 033103 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.76.033103

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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