Magnetic control in the terahertz
Magnetic control in the terahertz
复制标题
太赫兹磁控制
作者：
Dominik M. Juraschek;P. Narang
磁性材料是信息存储设备的核心，正在进行的研究寻求开发更快、更节能的系统。以1和0表示的单个数据位可以以磁矩的不同方向存储。传统上，使用电磁磁头在1和0之间翻转这些位，使用这种方法的读写速度目前仅限于千兆赫兹频率。大量的能量被用来驱动产生磁场的电流。与其用慢磁场或静态磁场来操纵磁矩，一个有趣的替代方案是将激光发出的光与它们的量子力学状态耦合起来。在本期的第1608页，Mashkovich等人(1)报道了光、磁和材料晶体结构的耦合，这为在很短的时间尺度上控制材料的磁性状态开辟了新的可能性。
Description Strong magnon-phonon coupling may help develop superfast optical drives Magnetic materials are central to information storage devices, with ongoing research seeking to develop faster and more energy-efficient systems. The individual bits of data, written as 1’s and 0’s, can be stored as different orientations of magnetic moments. Conventionally, an electromagnetic head is used to flip these bits between 1 and 0, and the read and write speeds using this method are currently limited to gigahertz frequencies. A substantial amount of energy is used to drive electric currents that generate the magnetic fields. Instead of manipulating magnetic moments with slow or static magnetic fields, an intriguing alternative involves coupling light from a laser to their quantum mechanical states. On page 1608 of this issue, Mashkovich et al. (1) report the coupling of light, magnetism, and the crystal structure of a material, which opens new possibilities for controlling the magnetic state of materials on very short time scales.
影响因子：
64.8
作者：
Schlauderer, S.;Lange, C.;Huber, R.
通讯作者：
Huber, R.