Three-component electronic structure of the cuprates derived from spectroscopic-imaging scanning tunneling microscopy

We present a phenomenological model that describes the low energy electronic structure of the cuprate high temperature superconductor Bi sub(2)Sr sub(2)CaCu sub( 2)O sub(8+x) as observed by spectroscopic-imaging scanning tunneling microscopy. Our model is based on observations from quasiparticle int...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2012-05, Vol.85 (17), Article 174501
Main Authors: Alldredge, J. W., Fujita, K., Eisaki, H., Uchida, S., McElroy, Kyle
Format: Article
Language:English
Subjects:
AGING MECHANISMS
Condensed matter
COPPER OXIDE
Cuprates
Density of states
Electronic structure
MATHEMATICAL ANALYSIS
Mathematical models
MICROSCOPY
Modulation
Scanning tunneling microscopy
Spectroscopy
SUPERCONDUCTORS
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Summary:We present a phenomenological model that describes the low energy electronic structure of the cuprate high temperature superconductor Bi sub(2)Sr sub(2)CaCu sub( 2)O sub(8+x) as observed by spectroscopic-imaging scanning tunneling microscopy. Our model is based on observations from quasiparticle interference (QPI) measurements and local density of states (LDOS) measurements that span a range of hole densities from critical doping, p ~ 0.19, to extremely underdoped, p ~ 0.06. The model presented unifies the spectral density of states observed in QPI studies with that of the LDOS. In unifying these two separate measurements, we find that the previously reported phenomena, the Bogoliubov QPI termination, the checkerboard conductance modulations, and the pseudogap are associated with unique energy scales that have features present in both the q-space and LDOS(E) data sets.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.85.174501