Dopant-Modulated Pair Interaction in Cuprate Superconductors

Tamara S. Nunner, Brian M. Andersen, Ashot Melikyan, and P. J. Hirschfeld
Phys. Rev. Lett. 95, 177003 – Published 19 October 2005

Abstract

A comparison of recent experimental STM data with single-impurity and many-impurity Bogoliubov–de Gennes calculations strongly suggests that random out-of-plane dopant atoms in cuprates modulate the pair interaction locally. This type of disorder is crucial to understanding the nanoscale electronic inhomogeneity observed in BSCCO-2212, and can reproduce observed correlations between the positions of impurity atoms and various aspects of the local density of states such as the gap magnitude and the height of the coherence peaks. Our results imply that each dopant atom modulates the pair interaction on a length scale of order one lattice constant.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 27 April 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.177003

©2005 American Physical Society

Authors & Affiliations

Tamara S. Nunner, Brian M. Andersen, Ashot Melikyan, and P. J. Hirschfeld

  • Department of Physics, University of Florida, Gainesville, Florida 32611, USA

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 95, Iss. 17 — 21 October 2005

Reuse & Permissions
Access Options
Collection
Heating up of Superconductors
January 27, 2017

This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers selected highlight some of the advances that have been made to date, both in understanding why these compounds behave in the way they do, and in utilizing them in applications. The papers included in the collection have been made free to read.

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×