English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Energy dissipation from a correlated system driven out of equilibrium

MPS-Authors
/persons/resource/persons182604

Sentef,  M. A.
HISKP, University of Bonn;
Center for Free Electron Laser Science;
Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Locator
Fulltext (public)

ncomms13761.pdf
(Publisher version), 651KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Rameau, J. D., Freutel, S., Kemper, A. F., Sentef, M. A., Freericks, J. K., Avigo, I., et al. (2016). Energy dissipation from a correlated system driven out of equilibrium. Nature Communications, 7: 13761. doi:10.1038/ncomms13761.


Cite as: http://hdl.handle.net/21.11116/0000-0001-8E7D-4
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.