Local Ordering in the Pseudogap State of the High-Tc Superconductor Bi2Sr2CaCu2O8+δ

Michael Vershinin, Shashank Misra, S. Ono, Y. Abe, Yoichi Ando, Ali Yazdani

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Abstract

We report atomic-scale characterization of the pseudogap state in a high-Tc superconductor, Bi2Sr2CaCu 2O8+δ. The electronic states at low energies within the pseudogap exhibit spatial modulations having an energy-independent incommensurate periodicity. These patterns, which are oriented along the copper-oxygen bond directions, appear to be a consequence of an electronic ordering phenomenon, the observation of which correlates with the pseudogap in the density of electronic states. Our results provide a stringent test for various ordering scenarios in the cuprates, which have been central in the debate on the nature of the pseudogap and the complex electronic phase diagram of these compounds.

Original languageEnglish (US)
Pages (from-to)1995-1998
Number of pages4
JournalScience
Volume303
Issue number5666
DOIs
StatePublished - Mar 26 2004

All Science Journal Classification (ASJC) codes

  • General

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