|Publication type:||Article in scientific journal|
|Type of review:||Peer review (publication)|
|Title:||Raman study of ordering phenomena in copper–oxygen systems|
|Published in:||Journal of Physics and Chemistry of Solids|
|Publisher / Ed. Institution:||Elsevier|
|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.|
|Fulltext version:||Published version|
|License (according to publishing contract):||Licence according to publishing contract|
|Departement:||School of Engineering|
|Organisational Unit:||Institute of Applied Mathematics and Physics (IAMP)|
|Appears in Collections:||Publikationen School of Engineering|
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