Published January 1, 2002
| Published + Submitted
Journal Article
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Spectroscopic evidence for anisotropic s-wave pairing symmetry in MgB_2
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Abstract
Scanning tunneling spectroscopy of superconducting MgB2 (T-c = 39 K) were studied on high-density pellets and c-axis oriented films. The sample surfaces were chemically etched to remove surface carbonated, and hydroxides, and the data were compared with calculated spectra for all symmetry-allowed pairing channels. The pairing potential (Delta(k)) is best described by an anisotropic s-wave pairing model, with Delta(k) = Delta(xy) sin(2)theta(k) +Delta(z) cos(2)theta(k), where theta(k) is the angle relative to the crystalline c-axis, Delta(z) similar to 8.0 meV, and Delta(xy) similar to 5.0 meV.
Additional Information
© 2001 The American Physical Society. Received 10 September 2001; published 29 November 2001. The research at Caltech was supported by NSF Grant #DMR-0103045 and the Caltech President's Fund. Part of the work described in this paper was performed by the Center for Space Microelectronics Technology, Jet Propulsion Laboratory, and was sponsored by NASA. The work at Pohang University was supported by the Ministry of Science and Technology of Korea through the Creative Research Initiative Program.Attached Files
Published - PhysRevB.65.012505.pdf
Submitted - SENprb01.pdf
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Additional details
- Eprint ID
- 882
- Resolver ID
- CaltechAUTHORS:SENprb01
- NSF
- DMR-0103045
- Caltech President's Fund
- NASA/JPL
- Ministry of Science and Technology (Korea)
- Created
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2005-11-01Created from EPrint's datestamp field
- Updated
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2023-06-01Created from EPrint's last_modified field