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  Review of the theoretical description of time-resolved angle-resolved photoemission spectroscopy in electron-phonon mediated superconductors

Kemper, A. F., Sentef, M. A., Moritz, B., Devereaux, T. P., & Freericks, J. K. (2017). Review of the theoretical description of time-resolved angle-resolved photoemission spectroscopy in electron-phonon mediated superconductors. Annalen der Physik, 529(9): 1600235. doi:10.1002/andp.201600235.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002B-4FED-7 Version Permalink: https://hdl.handle.net/21.11116/0000-0001-9E2A-F
Genre: Journal Article

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 Creators:
Kemper, A. F.1, Author
Sentef, Michael A.2, 3, Author           
Moritz, B.4, Author
Devereaux, T. P.4, 5, Author
Freericks, J. K.6, Author
Affiliations:
1Department of Physics, North Carolina State University, Raleigh, NC 27695, USA, ou_persistent22              
2Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
3Center for Free-Electron Laser Science, 22761 Hamburg, Germany, ou_persistent22              
4Stanford Institute for Materials and Energy Sciences (SIMES) SLAC National Accelerator Laboratory, ou_persistent22              
5Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA 94305, USA, ou_persistent22              
6Department of Physics, Georgetown University, Washington, DC 20057, USA, ou_persistent22              

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Free keywords: non–equilibrium many–body physics, superconductivity, angle–resolved photoemission spectroscopy, Higgs mode, population relaxation
 Abstract: We review recent work on the theory for pump/probe photoemission spectroscopy of electron‐phonon mediated superconductors in both the normal and the superconducting states. We describe the formal developments that allow one to solve the Migdal‐Eliashberg theory in nonequilibrium for an ultrashort laser pumping field, and explore the solutions which illustrate the relaxation as energy is transferred from electrons to phonons. We focus on exact results emanating from sum rules and approximate numerical results which describe rules of thumb for relaxation processes. In addition, in the superconducting state, we describe how Anderson‐Higgs oscillations can be excited due to the nonlinear coupling with the electric field and describe mechanisms where pumping the system enhances superconductivity.

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Language(s): eng - English
 Dates: 2016-08-312017-07-172017-09
 Publication Status: Issued
 Pages: -
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 Rev. Type: Peer
 Identifiers: DOI: 10.1002/andp.201600235
 Degree: -

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Project name : This work was supported by the Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Contracts No. DE-AC02-76SF00515 (Stanford/SIMES), and No. DE-FG02- 08ER46542 (Georgetown). Computational resources were provided by the National Energy Research Scientific Computing Center supported by the Department of Energy, Office of Science, under Contract No. DE-AC02- 05CH11231. J.K.F. was also supported by the McDevitt Bequest at George- town. M.S. was supported by the DFG (Grant No. SE 2558/2-1) through the Emmy Noether program.
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Title: Annalen der Physik
  Other : Ann. Phys.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 529 (9) Sequence Number: 1600235 Start / End Page: - Identifier: Other: 0003-3804
CoNE: https://pure.mpg.de/cone/journals/resource/954925379961