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Contrasting Nodal and Anti-Nodal Behavior in the Cuprates Via Multiple Gap Spectroscopies

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arxiv 0912.3008 v1 pith:JZ2LHQDY submitted 2009-12-15 cond-mat.supr-con cond-mat.str-el

Contrasting Nodal and Anti-Nodal Behavior in the Cuprates Via Multiple Gap Spectroscopies

classification cond-mat.supr-con cond-mat.str-el
keywords nodalspectroscopiesanti-nodalarpesassociatedbehaviorcupratestheory
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Using a precursor superconductivity scenario for the cuprates we present a theory for the temperature dependent behavior of the spectral gaps associated with four distinct spectroscopies: angle resolved photoemission (ARPES), differential conductance $dI/dV$, quasi-particle interference spectroscopy, and the autocorrelated ARPES pattern. We find good agreement for a range of existing experiments and make predictions for others. Our theory, which incorporates the necessary (observed) contrast between the nodal and anti-nodal response, shows how different nodal gap shapes are associated with these alternative spectroscopies.

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