Abstract
We report in-plane Cu-O atomic displacements as a function of doping in the La 2-xSr xCuO 4 system, determined by polarized Cu K-edge extended x-ray absorption fine structure measurements. We find a wide distribution of the Cu-O bonds showing a single peak asymmetric function for the system at low doping, which gets two peak function for the underdoped and optimally doped superconducting phases before turning to a single peak function for the overdoped phase. The results provide a direct evidence of critical local lattice fluctuations for an optimum transition temperature in the superconducting phases hosting quantum stripes.
Original language | English |
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Article number | 112622 |
Journal | Journal of Applied Physics |
Volume | 111 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2012 Jun 1 |
ASJC Scopus subject areas
- Physics and Astronomy(all)