Laser-induced transient magnons in Sr3Ir2O7 throughout the Brillouin zone

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 demons...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 2021-06, Vol.118 (22), p.1
Main Authors: Mazzone, Daniel G, Meyers, Derek, Cao, Yue, Vale, James G, Dashwood, Cameron D, Shi, Youguo, James, Andrew J A, Robinson, Neil J, Lin, Jiaqi, Thampy, Vivek, Tanaka, Yoshikazu, Johnson, Allan S, Miao, Hu, Wang, Ruitang, Assefa, Tadesse A, Kim, Jungho, Casa, Diego, Mankowsky, Roman, Zhu, Diling, Alonso-Mori, Roberto, Song, Sanghoon, Yavas, Hasan, Katayama, Tetsuo, Yabashi, Makina, Kubota, Yuya, Owada, Shigeki, Liu, Jian, Yang, Junji, Konik, Robert M, Robinson, Ian K, Hill, John P, McMorrow, Desmond F, st, Michael, Wall, Simon, Liu, Xuerong, Dean, Mark P M
Format: Article
Language:English
Subjects:
Antiferromagnetism
Brillouin zones
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Femtosecond pulses
Inelastic scattering
iridates
Magnetism
Magnets
Magnons
Physical Sciences
time-resolved resonant x-ray scattering
transient magnetic excitations
X-ray scattering
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Summary: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.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.2103696118