标题： 铁电薄膜中的快速热辅助极化翻转 显示英文标题

标题： Rapid heat assisted polarization reversal in ferroelectric thin films

摘要： 我们证明，夹在金属电极之间的铁电薄膜的开关可以通过激光辅助加热来控制，这类似于热辅助磁记录。 我们采用电气开关循环来量化可电气切换的剩余极化$P_\mathrm{r}$，并表明仅300 ns的电压脉冲使极化变化小于$\Delta P<P_\mathrm{r}$。 通过同步的纳秒激光脉冲对金属顶电极进行瞬态加热，会引起平均极化的反转$\Delta P^\mathrm{L}>P_\mathrm{r}$。 通过热方程模拟的瞬态平均温度可以解释不同相对时间$\Delta t$的激光脉冲到达前的极化变化。 显示英文摘要

摘要： We demonstrate that switching of ferroelectric thin-films sandwiched between metallic electrodes can be controlled by laser-assisted heating, reminiscent of heat-assisted magnetic recording. We employ electrical switching cycles that quantify the electrically switchable remanent polarization $P_\mathrm{r}$ and show that 300\,ns voltage pulses alone change the polarization by less than $\Delta P<P_\mathrm{r}$. Transient heating of the metallic top electrode by synchronized ns laser-pulses induces a reversal $\Delta P^\mathrm{L}>P_\mathrm{r}$ of the average polarization. The transient average temperature modeled by the heat equation can rationalize the polarization change observed for different relative timing $\Delta t$ of the laser pulse, if it arrives before the electrical pulse.