Journal
PHYSICAL REVIEW LETTERS
Volume 101, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.207002
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Funding
- NSF
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [704545] Funding Source: National Science Foundation
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Through a combined scanning tunneling microscopy and angle-resolved photoemission spectroscopy study, we report the observation of two distinct gaps (a small and a large gap) that coexist both in real space and in the antinodal region of momentum space, below the superconducting transition temperature (T(c)) of Bi(2)Sr(2-x)La(x)CuO(6+delta). We show that the small gap is associated with superconductivity. The large-gap persists above T(c), and seems linked to observed charge ordering. We find a strong correlation between the large and small gaps suggesting that they are affected by similar physical processes.
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