Ultrafast optical response of TBCCO(2 2 1 2) thin films

Ultrafast optical response of TBCCO(2 2 1 2) thin films

Ultrafast optical response of carriers in Tl2Ba2CaCu2O8+δ thin films was, for the first time, investigated by means of time-resolved pump and probe reflectivity measurement using femtosecond optical pulse. The transient reflective data showed a relaxation time of optically excited quasiparticles as...

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Veröffentlicht in:Physica. C, Superconductivity Superconductivity, 2003-05, Vol.388-389, p.467-468
Hauptverfasser: Murakami, H, Tominari, Y, Tonouchi, M, Yasuda, T, Wald, H, Seidel, P, Schneidewind, H
Format: Artikel
Sprache:eng
Schlagworte:
Femtosecond laser
Relaxation time
Terahertz
TlBa2CaCu2O8 + δ
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Zusammenfassung:Ultrafast optical response of carriers in Tl2Ba2CaCu2O8+δ thin films was, for the first time, investigated by means of time-resolved pump and probe reflectivity measurement using femtosecond optical pulse. The transient reflective data showed a relaxation time of optically excited quasiparticles as long as about 3.6 ps at 4.6 K. This value is intermediate between those for YBa2Cu3O7−δ and Bi2Sr2CaCu2O8+δ, and well explains the difference in the terahertz radiation properties for these high-Tc superconducting materials.
ISSN:0921-4534
1873-2143
DOI:10.1016/S0921-4534(02)02582-0