Scanning tunneling microscopy and spectroscopy of the chain layer in YBa2Cu3O7-x

Alejandro L. de Lozanne; S. H. Pan; Hal L. Edwards; D. J. Derro; A. L. Barr; John T. Markert

doi:10.1117/12.241739

10 June 1996 Scanning tunneling microscopy and spectroscopy of the chain layer in YBa₂Cu₃O_7-x

Alejandro L. de Lozanne, S. H. Pan, Hal L. Edwards, D. J. Derro, A. L. Barr, John T. Markert

Proceedings Volume 2696, Spectroscopic Studies of Superconductors; (1996) https://doi.org/10.1117/12.241739
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

We review our recent results on the surface structure and spectroscopy of the chain layer of YBa₂Cu₃O_7-x obtained with a low temperature scanning tunneling microscope. Foremost is the discovery of a long wavelength (approximately 1.3 nm) modulation of the electronic density along the CuO chains, which has now been confirmed by neutron diffraction to also exist in the bulk. Spectroscopically, we observe an energy gap (20 - 25 meV) which disappears near oxygen vacancies. We also give experimental details not previously published.

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Alejandro L. de Lozanne, S. H. Pan, Hal L. Edwards, D. J. Derro, A. L. Barr, and John T. Markert "Scanning tunneling microscopy and spectroscopy of the chain layer in YBa₂Cu₃O_7-x", Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); https://doi.org/10.1117/12.241739

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