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Proceedings Paper

Time-resolved optical response in BSCCO-2212
Author(s): Pierre Gay; Christopher J. Stevens; David C. Smith; John F. Ryan; Guang Yang; J. S. Abell
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Paper Abstract

The dynamics of the optical response of BSCCO-2212 measured at 1.5 eV has been investigated using femtosecond spectroscopy. The temperature dependence of the response shows three distinct regimes: (1) T less than Tc: with increasing temperature the differential reflectance, (Delta) R/R greater than 0, decreases to zero at Tc, similar to the behavior of the BCS gap function, and the relaxation rate increases linearly with temperature. (2) Tc less than T less than T* (T* - Tc approximately 35 K): (Delta) R/R less than 0. (3) T greater than T*: a weak, positive (Delta) R/R response is measured in the metallic phase. The intermediate regime observed here coincides with the pseudo gap phase detected in ARPES measurements.

Paper Details

Date Published: 22 December 1998
PDF: 7 pages
Proc. SPIE 3481, Superconducting and Related Oxides: Physics and Nanoengineering III, (22 December 1998); doi: 10.1117/12.335912
Show Author Affiliations
Pierre Gay, Univ. of Oxford (United Kingdom)
Christopher J. Stevens, Univ. of Oxford (United Kingdom)
David C. Smith, Univ. of Oxford (United Kingdom)
John F. Ryan, Univ. of Oxford (United Kingdom)
Guang Yang, Univ. of Birmingham (United Kingdom)
J. S. Abell, Univ. of Birmingham (United Kingdom)

Published in SPIE Proceedings Vol. 3481:
Superconducting and Related Oxides: Physics and Nanoengineering III
Davor Pavuna; Ivan Bozovic, Editor(s)

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