Published December 12, 1994 | Version v1
Journal article Metadata-only

Observation of a saddle-point singularity in Bi2(Sr0.97Pr0.03)2CuO6+δ and its implications for normal and superconducting state properties

Creators

  • 1. Stanford Electronics Laboratory and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305 (United States)
  • 2. Department of Applied Physics, Stanford University, Stanford, California 94305 (United States)
  • 3. Department of Applied Physics Stanford University, Stanford, California 94305 (United States)
  • 4. Center for Superconducting Research, Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)

Description

We have mapped the Fermi surface (FS) of single-crystal Bi(Sr0.97Pr0.03)2CuO6+δ using angle-resolved photoemission. We find an extended saddle point at bar M which is located very close to or at the Fermi level. This agrees with earlier photoemission data from the cuprates which reveals a striking correspondence between the position of the Fermi level relative to the saddle-point singularity and their normal state properties; however, it does not support the existence of a simple link to a high Tc. We also find that the FS is very strongly nested along the [110] direction

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
73
Journal Issue
24
Journal Page Range
p. 3298-3301.
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
26036672
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ANGULAR DISTRIBUTION; BISMUTH OXIDES; COPPER OXIDES; DISPERSION RELATIONS; ELECTRONIC STRUCTURE; FERMI LEVEL; HIGH-TC SUPERCONDUCTORS; PHOTOEMISSION; PRASEODYMIUM OXIDES; SINGULARITY; STRONTIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BISMUTH COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; DISTRIBUTION; EMISSION; ENERGY LEVELS; OXIDES; OXYGEN COMPOUNDS; PRASEODYMIUM COMPOUNDS; RARE EARTH COMPOUNDS; SECONDARY EMISSION; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS