Lightly doped La(2-x)Sr(x)CuO(4) as a Lifshitz helimagnet

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We study the static magnetic correlations in lightly doped La(2-x)Sr(x)CuO(4) within the framework of a dipolar frustration model for a canted antiferromagnet. We show that the stability of the canted Neel state for x<2% is due to the Dzyaloshinskii-Moriya and XY anisotropies. For higher doping the ground state is unstable towards a helicoidal magnetic phase where the transverse components of the staggered magnetization rotate in a plane perpendicular to the orthorhombic b-axis. Our theory reconciles, for the first time, the incommensurate peaks observed in elastic neutron scattering with Raman and magnetic susceptibility experiments in La(2-x)Sr(x)CuO(4).
4 pages, 2 figures, published in Phys. Rev. Lett

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/102740

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0510312
 http://arxiv.org/abs/cond-mat/0510312
 Phys. Rev. Lett. 96, 077004 (2006)
 doi:10.1103/PhysRevLett.96.077004

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