在整个布里渊区的SR3IR2O7中激光诱导的瞬态镁

论文标题

在整个布里渊区的SR3IR2O7中激光诱导的瞬态镁

Laser-Induced Transient Magnons in Sr3Ir2O7 Throughout the Brillouin Zone

论文作者

Mazzone, D. G., Meyers, D., Cao, Y., Vale, J. G., Dashwood, C. D., Shi, Y., James, A. J. A., Robinson, N. J., Lin, J. Q., Thampy, V., Tanaka, Y., Johnson, A. S., Miao, H., Wang, R., Assefa, T. A., Kim, J., Casa, D., Mankowsky, R., Zhu, D., Alonso-Mori, R., Song, S., Yavas, H., Katayama, T., Yabashi, M., Owada, Y. Kubota S., Liu, J., Yang, J., Konik, R. M., Robinson, I. K., Hill, J. P., McMorrow, D. F., Forst, M., Wall, S., Liu, X., Dean, M. P. M.

论文摘要

尽管对磁性的超快操纵对新的物理现象和应用具有巨大的希望，但针对特定状态的目标是我们对磁相关性如何在Ultrafast时尺度上发展的有限理解来阻止。使用超快的谐振非弹性X射线散射，我们证明了飞秒激光脉冲可以激发张开的抗铁磁体中的大波形的瞬时木蛋白，并且它们持续使用几个与几乎无质量的磁体中观察到的picoseconds相反。我们的工作表明，具有各向同性磁相互作用的材料是可以快速操纵磁性的材料。

Although ultrafast manipulation of magnetism holds great promise for new physical phenomena and applications, targeting specific states is held back by our limited understanding of how magnetic correlations evolve on ultrafast timescales. Using ultrafast resonant inelastic x-ray scattering we demonstrate that femtosecond laser pulses can excite transient magnons at large wavevectors in gapped antiferromagnets, and that they persist for several picoseconds which is opposite to what is observed in nearly gapless magnets. Our work suggests that materials with isotropic magnetic interactions are preferred to achieve rapid manipulation of magnetism.

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