Charge Density Wave Melting in TiSe<sub>2</sub>

ORAL

Abstract

The emergence of charge density waves (CDW) in TiSe2 has been the subject of study for many years, with the driving mechanism for the CDW formation is still under debate.
Here we use time- and angular-resolved photoemission spectroscopy (trARPES) studies with extreme UV probes to monitor in real time the dynamics of charge density wave melting and reformation in this material. The high energy and momentum resolution allows us to follow in details the dispersion and dynamics of transiently populated unoccupied bands and gap formation as a function of temperature and fluences. Possible nature of the CDW formation will be discussed.

*This work was supported by the DOE BES Materials Sciences and Engineering Division under contract DE-AC02-05CH11231.

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Presenters

  • Maximilian Huber

    • Materials Science Division, Lawrence Berkeley National Laboratory

Authors

  • Maximilian Huber

    • Materials Science Division, Lawrence Berkeley National Laboratory

  • Yi Lin

    • Materials Sciences Division, Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Laboratory
    • Materials Science Division, Lawrence Berkeley National Laboratory

  • Robert A Kaindl

    • Materials Sciences Division, Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Laboratory
    • Department of Physics, Arizona State University
    • Physics, Arizona State University

  • Alessandra Lanzara

    • University of California, Berkeley
    • Department of Physics, University of California
    • Physics, University of California, Berkeley
    • Lawrence Berkeley National Laboratory
    • Department of Physics, University of California Berkeley
    • Physics, University of California Berkeley
    • Physics, UC Berkeley