Title: Raman study of ordering phenomena in copper–oxygen systems
Authors : Hackl, R.
Tassini, L.
Venturini, Francesca
Erb, A.
Hartinger, Ch.
Kikugawa, N.
Fujita, T.
Published in : Journal of Physics and Chemistry of Solids
Volume(Issue) : 67
Issue : 1-3
Pages : 289
Pages to: 293
Publisher / Ed. Institution : Elsevier
Issue Date: 2006
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Superconductor; Raman spectroscopy; Charge–density wave; Transport property
Subject (DDC) : 530: Physics
Abstract: We summarize results of light-scattering experiments in underdoped La2−xSrxCuO4 (LSCO) and YBa2Cu3O6+x (Y-123) single crystals. Below a doping-dependent temperature close to the pseudogap cross-over line T*(p) new peaks appear in the low-energy part of the spectra. For low doping, p0.02 holes per CuO2, the features are observed in B2g symmetry in both LSCO and Y-123. At p=0.10 the additional contribution exists only in LSCO and is found at B1g symmetry. We interpret the low-energy peaks in terms of a charge ordering instability. The ‘stripes’ are fluctuating with preferential orientation along the diagonals and the principle axes at p0.02 and p=0.10, respectively.
Departement: School of Engineering
Organisational Unit: Institute of Applied Mathematics and Physics (IAMP)
Publication type: Article in scientific Journal
DOI : 10.1016/j.jpcs.2005.10.126
ISSN: 0022-3697
URI: https://digitalcollection.zhaw.ch/handle/11475/6204
Appears in Collections:Publikationen School of Engineering

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