Soliton-mediated compression density waves and charge density in 2d layers of underdoped cuprate-like lattices

Manuel G. Velarde; Werner Ebeling; Alexander P. Chetverikov

doi:10.1016/j.crme.2012.10.038

Soliton-mediated compression density waves and charge density in 2d layers of underdoped cuprate-like lattices

Manuel G. Velarde ^1,² ; Werner Ebeling ^1,³ ; Alexander P. Chetverikov ^1,⁴

¹ Instituto Pluridisciplinar, UCM, Paseo Juan XXIII, 1, 28040 Madrid, Spain
² Fundación Universidad Alfonso X El Sabio, Villanueva de la Cañada, 28691 Madrid, Spain
³ Institut für Physik, Humboldt-Universität Berlin, Newtonstrasse 15, 12489 Berlin, Germany
⁴ Faculty of Physics, Saratov State University, Astrakhanskaya 83, Saratov-410012, Russia

Comptes Rendus. Mécanique, Volume 340 (2012) no. 11-12, pp. 910-916.

Résumé

We study here the landscape of the excitations (compression density) of the nonlinear oxygen vibrations in a two-dimensional CuO₂ layer. After studying regular lattices we investigate lattices with bonds which are weakly distorted due to an influence of weak doping (below the HTSC regime). We estimate the density of compressions (strain density) in dependence of a misfit of the CuO-bonds. We show that with increasing misfit the nonlinear oscillations of the O-atoms are organized in stripes. Assuming that the density of doping charges follows at least qualitatively the compression density, we discuss the stripe structures of the strain density as a possible origin for the experimentally observed stripe structures.

Publié le : 2012-11-01

DOI : 10.1016/j.crme.2012.10.038

Mots clés : Anharmonicity, Solectrons, Cuprates

Affiliations des auteurs :

Manuel G. Velarde ^{1, 2} ; Werner Ebeling ^{1, 3} ; Alexander P. Chetverikov ^{1, 4}

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Manuel G. Velarde; Werner Ebeling; Alexander P. Chetverikov. Soliton-mediated compression density waves and charge density in 2d layers of underdoped cuprate-like lattices. Comptes Rendus. Mécanique, Volume 340 (2012) no. 11-12, pp. 910-916. doi : 10.1016/j.crme.2012.10.038. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2012.10.038/

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