Energy dissipation from a correlated system driven out of equilibrium
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Univ. Duisburg-Essen, Duisburg (Germany). Faculty of Physics and Center for Nanointegration Duisburg-Essen
- North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Univ. of Bonn (Germany). Helmholtz Inst. for Radiation and Nuclear Physics (HISKP); Max Planck Inst. for the Structure and Dynamics of Matter, Hamburg (Germany). Center for Free Electron Laser Science
- Georgetown Univ., Washington, DC (United States)
- National Inst. of Advanced Industrial Science and Technology, Tsukuba (Japan)
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 Bi 2 Sr 2 CaCu 2 O 8+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.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); European Union (EU)
- Grant/Contract Number:
- SC0012704; AC02-05CH11231; FG02-08ER46542; PR-2011-0003; 2009-BNL-PM015; 280555
- OSTI ID:
- 1338600
- Alternate ID(s):
- OSTI ID: 1411564
- Report Number(s):
- BNL-113262-2016-JA; R&D Project: PO016; PO010; KC0202020; KC0201060
- Journal Information:
- Nature Communications, Vol. 7; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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