Nonbolometric photoresponse of YBa2Cu3O7−δ films
- 9 September 1991
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 59 (11), 1371-1373
- https://doi.org/10.1063/1.105312
Abstract
Current biased films of YBa2Cu3O7−δ (YBCO) are illuminated by short pulses of laser light and transient voltages are measured for a range of temperature 10 K <T < 250 K. Near the superconducting transition temperature Tc a bolometric response is observed. Below Tc signals are observed that cannot be explained by a bolometric mechanism. These signals, with decay times of the order of hundreds of picoseconds, are characterized and discussed.Keywords
This publication has 15 references indexed in Scilit:
- Direct real time measurement of quasiparticle lifetimes in a superconductorPhysical Review Letters, 1991
- Anomalous photoresponse of metal filmsApplied Physics Letters, 1991
- Relaxation time of the order parameter in a high-temperature superconductorPhysical Review Letters, 1990
- Femtosecond room-temperature measurement of the electron-phonon coupling constant γ in metallic superconductorsPhysical Review Letters, 1990
- Nonlinear optical response of granular Y-Ba-Cu-O filmsPhysical Review B, 1989
- Observation of fast nonbolometric optical response of nongranular high T c Y1Ba2Cu3O7−x superconducting thin filmsApplied Physics Letters, 1989
- Electrical response of superconducting YBa2Cu3O7−δ to lightApplied Physics Letters, 1989
- Tunable subpicosecond dye laser amplified at 1 kHz by a cavity-dumped, Q-switched, and mode-locked Nd:YAG laserJournal of the Optical Society of America B, 1989
- Measurement of the specific-heat anomaly at the superconducting transition ofPhysical Review B, 1987
- Modified heating theory of nonequilibrium superconductorsPhysical Review B, 1975