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Proceedings Paper

Scanning tunneling microscopy and spectroscopy of the chain layer in YBa2Cu3O7-x
Author(s): Alejandro L. de Lozanne; S. H. Pan; Hal L. Edwards; D. J. Derro; A. L. Barr; John T. Markert
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Paper Abstract

We review our recent results on the surface structure and spectroscopy of the chain layer of YBa2Cu3O7-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.

Paper Details

Date Published: 10 June 1996
PDF: 9 pages
Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); doi: 10.1117/12.241739
Show Author Affiliations
Alejandro L. de Lozanne, Univ. of Texas/Austin (United States)
S. H. Pan, Univ. of Texas/Austin (United States)
Hal L. Edwards, Univ. of Texas/Austin (United States)
D. J. Derro, Univ. of Texas/Austin (United States)
A. L. Barr, Univ. of Texas/Austin (United States)
John T. Markert, Univ. of Texas/Austin (United States)

Published in SPIE Proceedings Vol. 2696:
Spectroscopic Studies of Superconductors
Ivan Bozovic; Dirk van der Marel, Editor(s)

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