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Periodic Coherence Peak Height Modulations in Superconducting BSCCO

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arxiv cond-mat/0404452 v1 pith:LQQQK7YB submitted 2004-04-20 cond-mat.supr-con

classification cond-mat.supr-con
keywords ldosmodulationsbsccocoherenceenergynon-dispersivepeakspatial
verification ladder T0 review T1 audit T2 compute T3 formal
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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 BSCCO in zero field. We see both dispersive and non-dispersive 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 non-dispersive LDOS modulations originate from an underlying charge-density modulation which interacts with superconductivity.

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