Mobile anti-phase domains in lightly doped lanthanum cuprate

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Light hole doping of lanthanum cuprate strongly suppresses the onset of antiferromagnetic (AF) order. Surprisingly, it simultaneously suppresses the extrapolated zero temperature sub-lattice magnetization. 139La NQR results in lightly Li-doped lanthanum cuprate have demonstrated that these effects are independent of the details of the mobility of the added holes. We propose a model in which doped holes phase separate into charged domain walls that surround ``anti-phase'' domains. These domains are mobile down to ~30 K where they either become pinned to the lattice or evaporate as their constituent holes become pinned to dopant impurities.
5 pages, 4 figures, submitted to proceedings of the Second International Conference on Stripes and High Tc Superconductivity

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/28587

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9809096
 http://arxiv.org/abs/cond-mat/9809096

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arXiv