Published February 1994
| Version v1
Journal article
Superconducting gap in PrxY1-xBa2Cu4O8 and YBa2-ySryCu4O8 probed by infrared phonon self-energies
Creators
- 1. Chalmers Univ. of Technology, Goeteborg (Sweden)
- 2. Univ. of Goeteborg (Sweden)
- 3. Max-Planck-Institut fuer Festkoerperforschung, Stuttgart (Germany)
Description
We report a reflectivity study of the z-polarized TO-phonons of PrxY1-xBa2Cu4O8 and YBa2-ySryCu4O8 alloys in the temperature range 10-300 K. Anomalies of the frequency and linewidth of the plane-oxygen vibration at ω ∼ 300 cm-1 due to the opening of the superconducting gap are found to occur upon crossing the superconducting transition temperature Tc. Phonon self-energy effects are strongly dependent on Tc, providing evidence for a relative shift of the gap with respect to the energy of phonon. 30 refs., 2 figs
Additional details
Publishing Information
- Journal Title
- Journal of Superconductivity
- Journal Volume
- 7
- Journal Issue
- 1
- Journal Page Range
- p. 113-116.
- ISSN
- 0896-1107
- CODEN
- JOUSEH
Conference
- Title
- Physics and chemistry of molecular and oxide superconductors conference.
- Dates
- 27-31 Jul 1993.
- Place
- Eugene, OR (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25072107
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BARIUM COMPOUNDS; CERAMICS; CUPRATES; FAR INFRARED RADIATION; HIGH-TC SUPERCONDUCTORS; IMPURITIES; INTERFEROMETRY; OXIDES; PHONONS; PRASEODYMIUM COMPOUNDS; SPECTRA; STRONTIUM COMPOUNDS; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE; YTTRIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; INFRARED RADIATION; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; QUASI PARTICLES; RADIATIONS; RARE EARTH COMPOUNDS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Secondary number(s)
- CONF-930710--.