Terahertz radiation characteristics of charge-ordered manganite Pr0.7Ca0.3MnO3 thin films excited by ultrafast optical pulses

摘要

Terahertz radiation characteristics of photoswitching devices made on charge-ordered manganites Pr0.7Ca0.3MnO3 have been investigated for thin films grown at different temperatures. We report that the temperature dependence of the THz radiation near the charge ordering temperature strongly depends on the growth condition of Pr0.7Ca0.3MnO3, while that near the magnetic transition temperature does not. (C) 2003 Elsevier Science B.V. All rights reserved. [References: 10]