Zooming-in on the charge ordering in YBa2Cu3O6.5

2004/02/19 by D. L. Feng, Andrivo Rusydi, Feng, D. L. +27 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con) #Theoretical and Computational Physics #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.cond-mat/0402488

4 pages, 3 figures

arxiv created 2004/02/19 · openalex publication_date 2004/02/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report direct evidence of charge/orbital ordering of low energy electronic states of Cu in YBa₂Cu₃O_6+x ortho-II phase in both the CuO₃ chain and the CuO₂ plane. Huge enhancement of the (1/2,0,0) superstructure Bragg peak is observed when photon energy is tuned to the Cu L_2,3 absorption edge with large polarization dependence. The ordering in the CuO₂ plane discovered here sheds new light on how the one dimensional Cu-O chains affect the CuO₂ plane, and why many normal and superconducting state properties of this system exhibit strong anisotropy.

Cited by

• Two-dimensional geometry of spin excitations in the high-transition-temperature superconductor YBa2Cu3O6+x

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