The Effects of Impurities on Junction Behavior in High-Temperature Superconductors

Abstract

This is a report on the progress in theoretical calculations of scanning tunneling microscopy spectra near impurities in superconductors. Calculations have been performed for Zn and Ni impurities in BSCCO, and compared with recent scanning tunneling microscopy spectra near those impurities. Good quantitative agreement has been found. The Zn atom appears to locally destroy superconductivity. New experiments involving two Ni atoms and a Ni and Zn atom have been proposed to clarify the range of this effect from Zn, and also to observe the spin-spin correlation function in the superconducting state.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2000
Accession Number
ADA375443

Entities

People

  • Michael E. Flatté

Organizations

  • University of Iowa

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Agreements
  • Band Structures
  • Crystal Lattices
  • Energy Bands
  • High Temperature
  • High Temperature Superconductors
  • Magnetic Properties
  • Materials
  • Microscopy
  • Orientation (Direction)
  • Quantum Tunneling
  • Quasiparticles
  • Scanning
  • Solid State Physics
  • Spectra
  • Superconductivity
  • Superconductors

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Superconducting Magnet Technology