Published October 14, 1991
| Version v1
Journal article
Features of the density of states of high-Tc superconductors probed by vacuum tunneling
- 1. School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota (USA)
- 2. Center for the Science and Application of Superconductivity (United States)
- 3. Argonne National Laboratory, Argonne, Illinois (USA)
Description
A scanning tunneling microscope has been used to study Bi2Sr2CaCu2Ox single crystals with transition temperatures of 85 K. Images of atoms and topographical features were obtained at low temperatures and spectra were acquired in the vacuum tunneling mode. Interpretations of the conductance data suggest that 2Δ/kBTc∼8.2. Most significantly, an additional conductance peak at 90 meV, suggesting a localized state, is observed. The latter would appear to support the marginal-Fermi-liquid picture
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 67
- Journal Issue
- 16
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 2195-2198
- ISSN
- 0031-9007
- CODEN
- PRLTA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 23007363
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BISMUTH OXIDES; CALCIUM OXIDES; CRYSTAL STRUCTURE; CUPRATES; ENERGY GAP; ENERGY-LEVEL DENSITY; HIGH-TC SUPERCONDUCTORS; MINING; SCANNING ELECTRON MICROSCOPY; STRONTIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRON MICROSCOPY; MICROSCOPY; OXIDES; OXYGEN COMPOUNDS; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS