Andreev and Single-Particle Tunneling Spectra of Underdoped Cuprate Superconductors
Journal Article
·
· Physical Review Letters
OSTI ID:1000445
We study tunneling spectroscopy between a normal metal and an underdoped cuprate superconductor modeled by a phenomenological theory in which the pseudogap is a precursor to the undoped Mott insulator. In the low barrier tunneling limit, the spectra are enhanced by Andreev reflection only within a voltage region of the small superconducting energy gap. In the high barrier tunneling limit, the spectra show a large energy pseudogap associated with single particle tunneling. Our theory semiquantitatively describes the two gap behavior observed in tunneling experiments.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- DOE - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 1000445
- Report Number(s):
- BNL-94354-2010-JA; PRLTAO; R&D Project: PO-015; KC0202030; TRN: US1100121
- Journal Information:
- Physical Review Letters, Vol. 105, Issue 16; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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