Published August 20, 2001
| Published + Submitted
Journal Article
Open
Evidence of doping-dependent pairing symmetry in cuprate superconductors
Abstract
Scanning tunneling spectroscopy studies reveal long-range spatial homogeneity and predominantly d(x2)-(y2)-pairing spectral characteristics in under- and optimally doped YBa2Cu3O7-delta superconductors, whereas STS on YBa2(Cu0.9934Zn0.0026Mg0.004)(3)O-6.9 exhibits microscopic spatial modulations and strong scattering near the Zn or Mg impurity sites, together with global suppression of the pairing potential. In contrast, in overdoped (Y0.7Ca0.3)Ba2Cu3O7-delta, (d(x2)-(y2) + s)-pairing symmetry is found, suggesting significant changes in the superconducting ground state at a critical doping value.
Additional Information
© 2001 The American Physical Society. Received 11 December 2000; published 3 August 2001. The work at Caltech was supported by NSF Grant #DMR-9705171, at University of Augsburg by BMBF Grant #13N6918/1, and at SRL by the New Energy and Industrial Technology Development Organization as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications. We thank Professor Asle Sudbø and Dr. C. C. Tsuei for useful comments and stimulating discussions.Attached Files
Published - PhysRevLett.87.087003.pdf
Submitted - YEHprl01.pdf
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PhysRevLett.87.087003.pdf
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Additional details
- Eprint ID
- 880
- Resolver ID
- CaltechAUTHORS:YEHprl01
- DMR-9705171
- NSF
- 13N6918/1
- Bundesministerium für Bildung und Forschung (BMBF)
- New Energy and Industrial Technology Development Organization (NEDO)
- Created
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2005-11-03Created from EPrint's datestamp field
- Updated
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2023-06-01Created from EPrint's last_modified field