Wave-vector power spectrum of the local tunneling density of states: Ripples in a d-wave sea

L. Capriotti, D. J. Scalapino, and R. D. Sedgewick
Phys. Rev. B 68, 014508 – Published 29 July 2003
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Abstract

A weak scattering potential imposed on a CuO2 layer of a cuprate superconductor modulates the local density of states N(x,ω). In recently reported experimental studies, scanning-tunneling maps of N(x,ω) have been Fourier transformed to obtain a wave-vector power spectrum. Here, for the case of a weak scattering potential, we discuss the structure of this power spectrum and its relationship to the quasiparticle spectrum and the structure factor of the scattering potential. Examples of quasiparticle interferences in normal metals and s- and d-wave superconductors are discussed.

  • Received 26 February 2003

DOI:https://doi.org/10.1103/PhysRevB.68.014508

©2003 American Physical Society

Authors & Affiliations

L. Capriotti*

  • Kavli Institute of Theoretical Physics, University of California, Santa Barbara, California 93106-4030, USA

D. J. Scalapino and R. D. Sedgewick

  • Department of Physics, University of California, Santa Barbara, California 93106-9530, USA

  • *Email address: caprio@kitp.ucsb.edu
  • Email address: djs@vulcan2.physics.ucsb.edu
  • Email address: rds@physics.ucsb.edu

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Issue

Vol. 68, Iss. 1 — 1 July 2003

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