标题： 由强太赫兹脉冲同时激发铁磁体的电子和磁性激发 显示英文标题

标题： Simultaneous electronic and the magnetic excitation of a ferromagnet by intense THz pulses

摘要： 磁化反转的速度是磁性数据存储中的一个关键特性。 来自强太赫兹脉冲的磁场最近被证明可以在亚皮秒时间尺度上诱导钴薄膜中的微小磁化动力学。 在这里，我们表明在更高的场强下，太赫兹电场开始发挥作用，显著改变了钴薄膜的介电特性。 电子和磁性响应被发现同时发生，电场响应的时间尺度比太赫兹刺激长几个数量级。 显示英文摘要

摘要： The speed of magnetization reversal is a key feature in magnetic data storage. Magnetic fields from intense THz pulses have been recently shown to induce small magnetization dynamics in Cobalt thin film on the sub-picosecond time scale. Here, we show that at higher field intensities, the THz electric field starts playing a role, strongly changing the dielectric properties of the cobalt thin film. Both the electronic and magnetic responses are found to occur simultaneously, with the electric field response persistent on a time scale orders of magnitude longer than the THz stimulus