Mobile anti-phase domains in lightly doped lanthanum cuprate

Details Mobile anti-phase domains in lightly doped lanthanum cuprate Mobile anti-phase domains in lightly doped lanthanum cuprate

1998-09-04

arxiv.org/abs/cond-mat/9809096v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures, submitted to proceedings of the Second International Conference on Stripes and High Tc Superconductivity

Scientific paper

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.

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