Stripe structure, spectral feature and soliton gap in high Tc cuprates

Details Stripe structure, spectral feature and soliton gap in high Tc cuprates Stripe structure, spectral feature and soliton gap in high Tc cuprates

1998-12-25

arxiv.org/abs/cond-mat/9812398v1

J. Phys. Soc. Jpn. 68, 2168 (1999).

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages RevTex, 5 figures

Scientific paper

10.1143/JPSJ.68.2168

We show that the lightly doped La_{2-x}Sr_{x}CuO_{4} can be described in terms of a stripe magnetic structure or soliton picture. The internal relationship between the recent neutron observation of the diagonal (x=0.05) to vertical (x >= 0.06) stripe transition, which was predicted, and the concomitant metal-insulator transition is clarified by this solitonic physics. The phase diagram with the unidentified transition lines between antiferromagnetic to stripe phases, the doping dependence of the modulation period, the origin of the mid-infrared optical absorption are investigated comparatively with other single layer systems: La_{2-x}Sr_{x}NiO_{4} and (La,Nd)_{2-x}Sr_{x}CuO_{4}. The novel type of quasi-particles and holes is fully responsible for metallic conduction and ultimately superconductivity.

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