Abstract
Long-term photoexcitation experiments were performed on YBa/sub 2/Cu/sub 3/O/sub x/ (x approximately=6.6) thin films, prepared by pulsed-laser deposition on "tilted" SrTiO/sub 3/ substrates. From the anisotropic resistance of the samples, the in-plane and the out-of-plane resistivities were calculated. Photoexcitation was carried out with a He-Ne laser at various temperatures from 70 K to 305 K. We observed that the electrical anisotropy rho /sub c// rho /sub ab/ increased at low temperatures, but decreased at high temperatures. This unusual behavior resembles that of the in-plane Hall mobility in a previous study. Possible interpretations according to the models for the photodoping effect in YBa/sub 2/Cu/sub 3/O/sub x/ are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 1123-1127 |
| Number of pages | 5 |
| Journal | Journal of Low Temperature Physics |
| Volume | 117 |
| Issue number | 5-6 |
| DOIs | |
| Publication status | Published - 1999 |
Austrian Fields of Science 2012
- 103018 Materials physics
- 503013 Subject didactics of natural sciences
Keywords
- barium-compounds; electrical-resistivity; high-temperature-superconductors; photoelectricity-; stoichiometry-; superconducting-thin-films; yttrium-compounds photoinduced-changes; electrical-anisotropy; oxygen-depleted-YBa-sub-2-Cu-sub-3-O-sub-x-; long-term-photoexcitation-experiments; thin-films; pulsed-laser-deposition; tilted-SrTiO-sub-3-substrates; anisotropic-resistance; resistivities-; low-temperatures; high-temperatures; in-plane-Hall-mobility; models-; photodoping-effect; 70-to-305-K; YBa-sub-2-Cu-sub-3-O; SrTiO-sub-3- A7430F-Transport-properties-of-superconductors; A7470V-Perovskite-phase-superconductors; A6480E-Stoichiometry-and-homogeneity; A7240-Photoconduction-and-photovoltaic-effects:-photodielectric-effects; A7475-Superconducting-films
