Time-resolved XUV ARPES with tunable 24–33 eV laser pulses at 30 meV resolution
Name
s41467-019-11492-3.pdf
Description
Published version
Size
5.59 MB
Format
Adobe PDF
Checksum (MD5)
7988a731311f74ac349ee9b421ebd728
Author(s)
Sie, Edbert J.
Rohwer, Timm
Lee, Changmin
Gedik, Nuh
Date Issued
August 6, 2019
Journal
Nature communications
Publisher
Springer Science and Business Media LLC
Citation
Sie, Edbert J. et al. "Time-resolved XUV ARPES with tunable 24–33 eV laser pulses at 30 meV resolution." Nature communications 10 (2019): 3535 © 2019 The Author(s)
Version
Final published version
Abstract
High harmonic generation of ultrafast laser pulses can be used to perform angle-resolved photoemission spectroscopy (ARPES) to map the electronic band structure of materials with femtosecond time resolution. However, currently it is difficult to reach high momenta with narrow energy resolution. Here, we combine a gas phase extreme ultraviolet (XUV) femtosecond light source, an XUV monochromator, and a time-of-flight electron analyzer to develop XUV-based time-resolved ARPES. Our technique can produce tunable photon energy between 24–33 eV with an unprecedented energy resolution of 30 meV and time resolution of 200 fs. This technique enables time-, energy- and momentum-resolved investigation of the nonequilibrium dynamics of electrons in materials with a full access to their first Brillouin zone. We evaluate the performance of this setup through exemplary measurements on various quantum materials, including WTe2, WSe2, TiSe2, and Bi2Sr2CaCu2O8+δ.
Subjects
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy
General Chemistry
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/s41467-019-11492-3
