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When THz meets X-rays: Ultrafast Magnetism

日程 : 2017年9月25日(月) 10:30 〜 場所 : 播磨会議室(TV会議:物性研究所第一会議室) 講師 : Dr. Ilie Radu 所属 : Max-Born Institute Berlin, Germany 世話人 : 和達大樹 (ext.63400)
e-mail: wadati@issp.u-tokyo.ac.jp

The fundamental interactions and excitations governing magnetism and correlated matter occur on nanometer length-scales and femtosecond time-scales. Examples are phonons, magnons and electrons as well as their mutual interactions. A direct and selective excitation of these quasiparticles is possible with electromagnetic pulses at THz frequencies, whereas space-, element- and spin-resolved probing is provided by X-rays. Combining these two techniques will allow us to explore magnetic materials with unprecedented temporal, spatial and elemental resolution and to obtain quasiparticle-specific information, these being the key ingredients for understanding ultrafast magnetic phenomena.
Here, I will review the latest developments in our projects on ultrafast magnetism using both X-rays and THz radiation with a focus on magnetization switching phenomena.

(公開日: 2017年08月04日)