@inproceedings{fdf80d323e4d4141a4a56824f5cbffc1,
title = "Ultrafast dynamics in 2D materials and heterostructures visualized with time- and angle-resolved photoemission",
abstract = "The optical and electronic properties of two-dimensional (2D) materials make them attractive for a variety of applications in quantum information processing, solar-energy harvesting, and catalysis. However, the dynamics of electrons, holes, and excitons formed after photo-excitation are often complex and involve many states that are optically dark, making their characterization with optical spectroscopy alone difficult. We present our recent work imaging the quantum states of 2D materials and their heterostructures in momentum space using time- and angle-resolved photoemission. A unique combination of tunable ultrashort extreme ultraviolet (XUV) pulses with 61 MHz repetition rate and time-of-flight momentum microscopy (ToF k-mic) enables the parallel recording of electron dynamics in all states across the full Brillouin zone after perturbative excitation. We will present results on pseudospin dynamics in graphene, valley circular dichroism in monolayer WS2, and hybridized excitons in MoSe2/WS2 bilayers.",
keywords = "frequency combs, high-order harmonic generation, momentum microscopy, Photoelectron spectroscopy",
author = "Allison, {Thomas K.} and Withers, {Zachary H.} and Ziling Li and Jin Bakalis and Sergii Chernov and Shuyu Cheng and Gerd Sch{\"o}nhense and Xu Du and Roland Kawakami and Alice Kunin",
note = "Publisher Copyright: {\textcopyright} 2024 SPIE.; Ultrafast Phenomena and Nanophotonics XXVIII 2024 ; Conference date: 29-01-2024 Through 31-01-2024",
year = "2024",
doi = "10.1117/12.3003401",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Markus Betz and Elezzabi, {Abdulhakem Y.}",
booktitle = "Ultrafast Phenomena and Nanophotonics XXVIII",
address = "United States",
}