Femtosecond dynamics of BSCCO-2212

Measurements of the femtosecond dynamics of the electronic excitations of BSCCO-2212 were performed by ultrafast time-resolved spectroscopy of flux-grown single crystals and thin films grown by radiofrequency magnetron sputtering on LaAlO sub(3) substrates. The results show that the dynamics is quit...

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Bibliographic Details
Published in:Journal of low temperature physics 1999-12, Vol.117 (5), p.1025-1029
Main Authors: Gay, P, Smith, D C, Stevens, C J, Chen, C, Yang, G, Abell, S J, Wang, D Z, Wang, J H, Ren, Z F, Ryan, J F
Format: Article
Language:English
Subjects:
Bismuth compounds
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
Electron transitions
ENERGY GAP
High temperature superconductors
HIGH-TC SUPERCONDUCTORS
Lanthanum compounds
MATERIALS SCIENCE
OPTICAL PROPERTIES
Single crystals
SPECTROSCOPY
STRONTIUM OXIDES
Superconducting films
SUPERCONDUCTIVITY
Thermal conductivity
Ultrafast phenomena
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Summary:Measurements of the femtosecond dynamics of the electronic excitations of BSCCO-2212 were performed by ultrafast time-resolved spectroscopy of flux-grown single crystals and thin films grown by radiofrequency magnetron sputtering on LaAlO sub(3) substrates. The results show that the dynamics is quite different from that measured in YBCO-123, and the normal, pseudogap and superconducting states have a distinctly different behavior. The observed dynamical behavior is largely sample independent. The main difference is that single crystals showed larger heating on illumination due to the much lower thermal conductivity of BSCCO compared with LaAlO sub(3).
ISSN:0022-2291
1573-7357
DOI:10.1023/A:1022561904373