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  Role of intraband transitions in photocarrier generation

Sato, S., Lucchini, M., Volkov, M., Schlaepfer, F., Gallmann, L., Keller, U., et al. (2018). Role of intraband transitions in photocarrier generation. Physical Review B, 98(3): 035202. doi:10.1103/PhysRevB.98.035202.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-BF0D-B Version Permalink: http://hdl.handle.net/21.11116/0000-0004-AA32-4
Genre: Journal Article

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PhysRevB.98.035202.pdf (Publisher version), 934KB
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PhysRevB.98.035202.pdf
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2018
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© American Physical Society

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https://dx.doi.org/10.1103/PhysRevB.98.035202 (Publisher version)
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https://arxiv.org/abs/1804.03678 (Preprint)
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 Creators:
Sato, S.1, 2, Author              
Lucchini, M.3, Author
Volkov, M.4, Author
Schlaepfer, F.4, Author
Gallmann, L.4, Author
Keller, U.4, Author
Rubio, A.1, 2, 5, Author              
Affiliations:
1Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
2Center for Free-Electron Laser Science, ou_persistent22              
3Department of Physics, Politecnico di Milano, ou_persistent22              
4Department of Physics, ETH Zürich, ou_persistent22              
5Center for Computational Quantum Physics, The Flatiron Institute, ou_persistent22              

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 Abstract: We theoretically investigate the role of intraband transitions in laser-induced carrier generation for different photon energy regimes: (i) strongly off resonant, (ii) multiphoton resonant, and (iii) resonant conditions. Based on the analysis for the strongly off resonant and multiphoton resonant cases, we find that intraband transitions strongly enhance photocarrier generation in both multiphoton absorption and tunneling excitation regimes, and thus, they are indispensable for describing the nonlinear photocarrier generation processes. Furthermore, we find that intraband transitions enhance photocarrier generation even in the resonant condition, opening additional multiphoton excitation channels once the laser irradiation becomes sufficiently strong. The above findings suggest a potential for efficient control of photocarrier generation via multicolor laser pulses through optimization of the contributions from intraband transitions.

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Language(s): eng - English
 Dates: 2018-06-042018-04-102018-07-052018-07-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevB.98.035202
arXiv: 1804.03678
 Degree: -

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Project name : This work was supported by the European Research Council (Grant No. ERC-2015-AdG-694097), Grupos Consolidados (IT578-13), European Union’s H2020 program under Grant Agreement No. 676580 (NOMAD), and the National Center of Competence in Research Molecular Ultrafast Science and Technology (NCCR MUST) funded by the Swiss National Science Foundation. S.A.S. gratefully acknowledges the fellowship from the Alexander von Humboldt Foundation.
Grant ID : 676580
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 98 (3) Sequence Number: 035202 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008