Published June 24, 1991
| Version v1
Journal article
Dynamic conductivity and coherence peak in YBa2Cu3O7 superconductors
- 1. AT ampersand T Bell Laboratories, Crawfords Corner Road, Holmdel, New Jersey 07733 (USA)
- 2. AT ampersand T Bell Laboratories, 600 Mountain Avenue, Murray Hill, New Jersey 07974 (USA)
Description
We measure directly both the real and imaginary parts of the sub-band-gap conductivity σ in YBa2Cu3O7 in the 15--80 cm-1 frequency range using coherent time-domain terahertz spectroscopy. We observe a peak in the real part σ1 similar to the coherence peak expected in an s-wave BCS superconductor. The absence of such a peak in NMR relaxation-rate experiments suggests that its origin lies in a strongly temperature-dependent inelastic-scattering rate rather in coherence factors
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 66
- Journal Issue
- 25
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 3305-3308
- ISSN
- 0031-9007
- CODEN
- PRLTA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22076234
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; GHZ RANGE 100-1000; HIGH-TC SUPERCONDUCTORS; LOW TEMPERATURE; PHOTOCONDUCTIVITY; QUATERNARY COMPOUNDS; SUPERCONDUCTING FILMS; TEMPERATURE DEPENDENCE; ULTRALOW TEMPERATURE; VERY LOW TEMPERATURE; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; AMINES; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; FILMS; FREQUENCY RANGE; GHZ RANGE; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS