Research

Pressure dependent relaxation in the photo-excited Mott insulator ETF2TCNQ:Influence of hopping and correlations on quasiparticle recombination rates


Reference:

Mitrano, M., Cotugno, G., Clark, S. R., Singla, R., Kaiser, S., Staehler, J., Beyer, R., Dressel, M., Baldassarre, L., Nicoletti, D., Perucchi, A., Hasegawa, T., Okamoto, H., Jaksch, D. and Cavalleri, A., 2014. Pressure dependent relaxation in the photo-excited Mott insulator ETF2TCNQ:Influence of hopping and correlations on quasiparticle recombination rates. Physical Review Letters, 112 (11), 117801.

Related documents:

[img] Other (Pressure dependent relaxation in the photo-excited Mott insulator ET - F2TCNQ)
Download (3490kB)

    Official URL:

    http://dx.doi.org/10.1103/PhysRevLett.112.117801

    Abstract

    Femtosecond relaxation of photo-excited quasiparticles in the one dimensional Mott insulator ET-F2TCNQ are measured as a function of external pressure, which is used to tune the electronic structure. By fitting the static optical properties and measuring femtosecond decay times at each pressure value, we correlate the relaxation rates with the electronic bandwidth t and on the intersite correlation energy V. The scaling of relaxation times with microscopic parameters is different than for metals and semiconductors. The competition between localization and delocalization of the Mott-Hubbard exciton dictates the efficiency of the decay, as exposed by a fit based on the solution of the time-dependent extended Hubbard Hamiltonian.

    Details

    Item Type Articles
    CreatorsMitrano, M., Cotugno, G., Clark, S. R., Singla, R., Kaiser, S., Staehler, J., Beyer, R., Dressel, M., Baldassarre, L., Nicoletti, D., Perucchi, A., Hasegawa, T., Okamoto, H., Jaksch, D. and Cavalleri, A.
    DOI10.1103/PhysRevLett.112.117801
    Uncontrolled Keywordscond-mat.str-el
    DepartmentsFaculty of Science > Physics
    RefereedYes
    StatusPublished
    ID Code47328
    Additional Information24 pages, 7 figures, final version including supplementary materials

    Export

    Actions (login required)

    View Item

    Document Downloads

    More statistics for this item...