A four unit cell periodic pattern of quasi-particle states surrounding vortex cores in Bi2Sr2CaCu2O8+δ

J. E. Hoffman, E. W. Hudson, K. M. Lang, V. Madhavan, H. Eisaki, S. Uchida, J. C. Davis

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Abstract

Scanning tunneling microscopy is used to image the additional quasi-particle states generated by quantized vortices in the high critical temperature superconductor Bi2Sr2CaCu2O8+δ. They exhibit a copper-oxygen bond-oriented "checkerboard" pattern, with four unit cell (4ao) periodicity and a ∼30 angstrom decay length. These electronic modulations may be related to the magnetic field-induced, 8ao periodic, spin density modulations with decay length of ∼70 angstroms recently discovered in La1.84Sr0.16CuO4. The proposed explanation is a spin density wave localized surrounding each vortex core. General theoretical principles predict that, in the cuprates, a localized spin modulation of wavelength λ should be associated with a corresponding electronic modulation of wavelength λ/2, in good agreement with our observations.

Original languageEnglish (US)
Pages (from-to)466-469
Number of pages4
JournalScience
Volume295
Issue number5554
DOIs
StatePublished - Jan 18 2002

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All Science Journal Classification (ASJC) codes

  • General

Cite this

Hoffman, J. E., Hudson, E. W., Lang, K. M., Madhavan, V., Eisaki, H., Uchida, S., & Davis, J. C. (2002). A four unit cell periodic pattern of quasi-particle states surrounding vortex cores in Bi2Sr2CaCu2O8+δ. Science, 295(5554), 466-469. https://doi.org/10.1126/science.1066974