Jie Ji, Siyan Zhou, Jingcheng Zhang, Furi Ling, Jianquan Yao,
https://www.nature.com/articles/s41598-018-21095-5
The transmission and dielectric spectra of ferroelectric STO/PT superlattice on Si substrate under simultaneous external optical and electric field were investigated and compared at room temperature. Results found that when with an optical field, the electric field realized an effective modulation on the transmission, which displayed a diode property. In addition, a comprehensive model combined with Debye relaxation and Lorentz model was used to analyze the dielectric spectra, variation of the soft mode with external field was put emphasis on exploring.
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