Unconventional light-induced states visualized by ultrafast electron diffraction and microscopy
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43577_2021_163_ReferencePDF.pdf
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62d865853ae0d7a58a8405c44fe95eee
Author(s)
Zong, Alfred
Kogar, Anshul
Gedik, Nuh
Date Issued
August 2021
Journal
MRS Bulletin
Publisher
Springer International Publishing
Citation
Zong, A., Kogar, A. & Gedik, N. Unconventional light-induced states visualized by ultrafast electron diffraction and microscopy. MRS Bulletin 46, 720–730 (2021)
Version
Author's final manuscript
Abstract
Exciting electrons in solids with intense light pulses offers the possibility of generating new states of matter through nonthermal means and controlling their macroscopic properties on femto- to picosecond time scales. One way to manipulate a solid is by altering its lattice structure, which often underlies the electronic, magnetic, and other phases. Here, we review how structures of solids are affected by photoexcitation and how their ultrafast dynamics are captured with time-resolved electron diffraction and microscopy. Specifically, we survey how a strong light pulse has been used to tailor the nonequilibrium characteristics to yield on-demand properties in various material classes. In the existing literature, four main routes have been exploited to control material structures: (1) phase competition, (2) electronic correlations, (3) excitation of coherent modes, and (4) defect generation. In this article, we discuss experiments relevant to all four schemes and finish by speculating about future directions.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1557/s43577-021-00163-8
