In-plane Cu-O bond distribution and charge inhomogeneity in La 2-xSr xCuO 4 as a function of doping

N. L. Saini, H. Oyanagi, T. Adachi, T. Noji, H. Sato, Y. Koike

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Article number112622
JournalJournal of Applied Physics
Volume111
Issue number11
DOIs
Publication statusPublished - 2012 Jun 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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