Micro-Raman evidence for topological charge order across the superconducting dome of La_{2-x)SrxCuO4

Abstract

The doping dependence of the micro-Raman spectra of high quality La_{2-x}Sr_xCuO_4 microcrystals with x=0.0-0.45 has been investigated in the region 10-300 K. The phonon at ~100 cm^{-1} of the orthorhombic phase shows a classical soft mode behavior up to x=0.17, supporting its correlation with the LTO to HTT transition. In the xx/yy polarization spectra of the superconducting concentrations new modes at ~150 and 370 cm^{-1} related to the symmetry breaking and a broad band at ~280 cm^{-1} are attributed to the charge ordering at temperatures well above T_c. At all temperatures studied a correlation has been found between the doping dependence of the transition temperature and the intensity of the bands at ~150, ~280, ~370 cm^{-1}, the intensity of the La/Sr mode, and the asymmetry of the apex phonon.

8 pages, 13 figures

References in corpus (5)

• How to detect fluctuating order in the high-temperature superconductors
• Landau Theory of Stripe Phases in Cuprates and Nickelates
• Mixed lattice and electronic states in high-temperature superconductors
• Charge and Spin Dynamics of an Ordered Stripe Phase in La_(1 2/3)Sr_(1/3)NiO_4 by Raman Spectroscopy
• Infrared signatures of hole and spin stripes in La{2-x}Sr{x}CuO{4}

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• Can electronic quantum criticality drive phonon-induced linear-in-temperature resistivity?