Journal
PHYSICAL REVIEW B
Volume 70, Issue 21, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevB.70.214514
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In this paper we analyze, using scanning tunneling spectroscopy (STS), the local density of electronic states (LDOS) in nearly optimally doped Bi2Sr2CaCu2O8+delta in zero magnetic field. We see both dispersive and nondispersive spatial LDOS modulations as a function of energy in our samples. Moreover, a spatial map of the superconducting coherence peak heights shows the same structure as the low-energy LDOS. This suggests that these nondispersive LDOS modulations originate from an underlying charge-density modulation, which interacts with superconductivity.
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