Ultrafast extreme-ultraviolet ARPES studies of electronic dynamics in two-dimensional materials

Jan Heye Buss, Julian Maklar, Frédéric Joucken, He Wang, Yiming Xu, Sung Kwan Mo, Alessandra Lanzara, Robert A. Kaindl

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The intriguing electronic properties of two-dimensional materials motivates experiments to resolve their rapid, microscopic interactions and dynamics across momentum space. Essential insight into the electronic momentum-space dynamics can be obtained directly via time- and angle-resolved photoemission spectroscopy (trARPES). We discuss the development of a high-repetition rate trARPES setup that employs a bright source of narrowband, extreme-UV harmonics around 22.3 eV, and its application to sensitive studies of materials dynamics. In the bulk transition-metal dichalcogenide MoSe2 momentum-space quasiparticle scattering is observed after resonant excitation at the K-point exciton line, resulting in the time-delayed buildup of electrons at the Σ-point conduction band minimum. We will discuss this and other aspects of the non-equilibrium electronic response accessible with the extreme-UV trARPES probe.

Original languageEnglish (US)
Title of host publicationUltrafast Phenomena and Nanophotonics XXI
EditorsMarkus Betz, Abdulhakem Y. Elezzabi
PublisherSPIE
ISBN (Electronic)9781510606456
DOIs
StatePublished - 2017
Externally publishedYes
EventUltrafast Phenomena and Nanophotonics XXI 2017 - San Francisco, United States
Duration: Jan 30 2017Feb 2 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10102
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceUltrafast Phenomena and Nanophotonics XXI 2017
CountryUnited States
CitySan Francisco
Period1/30/172/2/17

Keywords

  • Molybdenum Diselenide
  • Time- and angle-resolved photoemission spectroscopy
  • Transitionmetal dichalcogenides
  • Ultrafast phenomena in semiconductors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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