Periodic coherence-peak height modulations in superconducting
- 10 December 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 70 (21), 214514
- https://doi.org/10.1103/physrevb.70.214514
Abstract
In this paper we analyze, using scanning tunneling spectroscopy (STS), the local density of electronic states (LDOS) in nearly optimally doped 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.
Keywords
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