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Energy dissipation from a correlated system driven out of equilibrium

Author

Listed:
  • J. D. Rameau

    (Brookhaven National Laboratory, Brookhaven National Laboratory)

  • S. Freutel

    (Faculty of Physics and Center for Nanointegration Duisburg-Essen (Cenide), University Duisburg-Essen)

  • A. F. Kemper

    (North Carolina State University
    Lawrence Berkeley National Laboratory)

  • M. A. Sentef

    (HISKP, University of Bonn
    Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science)

  • J. K. Freericks

    (Georgetown University)

  • I. Avigo

    (Faculty of Physics and Center for Nanointegration Duisburg-Essen (Cenide), University Duisburg-Essen)

  • M. Ligges

    (Faculty of Physics and Center for Nanointegration Duisburg-Essen (Cenide), University Duisburg-Essen)

  • L. Rettig

    (Faculty of Physics and Center for Nanointegration Duisburg-Essen (Cenide), University Duisburg-Essen
    Present address: Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, Berlin 14195, Germany)

  • Y. Yoshida

    (National Institute of Advanced Industrial Science and Technology)

  • H. Eisaki

    (National Institute of Advanced Industrial Science and Technology)

  • J. Schneeloch

    (Brookhaven National Laboratory, Brookhaven National Laboratory)

  • R. D. Zhong

    (Brookhaven National Laboratory, Brookhaven National Laboratory)

  • Z. J. Xu

    (Brookhaven National Laboratory, Brookhaven National Laboratory)

  • G. D. Gu

    (Brookhaven National Laboratory, Brookhaven National Laboratory)

  • P. D. Johnson

    (Brookhaven National Laboratory, Brookhaven National Laboratory)

  • U. Bovensiepen

    (Faculty of Physics and Center for Nanointegration Duisburg-Essen (Cenide), University Duisburg-Essen)

Abstract

In complex materials various interactions have important roles in determining electronic properties. Angle-resolved photoelectron spectroscopy (ARPES) is used to study these processes by resolving the complex single-particle self-energy and quantifying how quantum interactions modify bare electronic states. However, ambiguities in the measurement of the real part of the self-energy and an intrinsic inability to disentangle various contributions to the imaginary part of the self-energy can leave the implications of such measurements open to debate. Here we employ a combined theoretical and experimental treatment of femtosecond time-resolved ARPES (tr-ARPES) show how population dynamics measured using tr-ARPES can be used to separate electron–boson interactions from electron–electron interactions. We demonstrate a quantitative analysis of a well-defined electron–boson interaction in the unoccupied spectrum of the cuprate Bi2Sr2CaCu2O8+x characterized by an excited population decay time that maps directly to a discrete component of the equilibrium self-energy not readily isolated by static ARPES experiments.

Suggested Citation

  • J. D. Rameau & S. Freutel & A. F. Kemper & M. A. Sentef & J. K. Freericks & I. Avigo & M. Ligges & L. Rettig & Y. Yoshida & H. Eisaki & J. Schneeloch & R. D. Zhong & Z. J. Xu & G. D. Gu & P. D. Johnso, 2016. "Energy dissipation from a correlated system driven out of equilibrium," Nature Communications, Nature, vol. 7(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13761
    DOI: 10.1038/ncomms13761
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