| Literature DB >> 34039712 |
Daniel G Mazzone1,2, Derek Meyers1,3, Yue Cao1,4, James G Vale5, Cameron D Dashwood5, Youguo Shi6, Andrew J A James7, Neil J Robinson8, Jiaqi Lin1,9, Vivek Thampy10, Yoshikazu Tanaka11, Allan S Johnson12, Hu Miao1, Ruitang Wang9, Tadesse A Assefa1, Jungho Kim13, Diego Casa13, Roman Mankowsky14, Diling Zhu15, Roberto Alonso-Mori15, Sanghoon Song15, Hasan Yavas15, Tetsuo Katayama11, Makina Yabashi11, Yuya Kubota11, Shigeki Owada11, Jian Liu16, Junji Yang16, Robert M Konik1, Ian K Robinson1,5, John P Hill17, Desmond F McMorrow5, Michael Först14, Simon Wall18,19, Xuerong Liu20, Mark P M Dean21.
Abstract
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.Entities:
Keywords: iridates; time-resolved resonant X-ray scattering; transient magnetic excitations
Year: 2021 PMID： 34039712 PMCID： PMC8179144 DOI： 10.1073/pnas.2103696118
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205