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Title: Ab initio phonon coupling and optical response of hot electrons in plasmonic metals

Journal Article · · Physical Review B
 [1];  [1];  [2];  [1];  [1]
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  2. California Inst. of Technology (CalTech), Pasadena, CA (United States); 3NG NEXT, Redondo Beach, CA (United States)

Ultrafast laser measurements probe the nonequilibrium dynamics of excited electrons in metals with increasing temporal resolution. Electronic structure calculations can provide a detailed microscopic understanding of hot electron dynamics, but a parameter-free description of pump-probe measurements has not yet been possible, despite intensive research, because of the phenomenological treatment of electron-phonon interactions. As such, we present ab initio predictions of the electron-temperature dependent heat capacities and electron-phonon coupling coefficients of plasmonic metals. We find substantial differences from free-electron and semiempirical estimates, especially in noble metals above transient electron temperatures of 2000 K, because of the previously neglected strong dependence of electron-phonon matrix elements on electron energy. We also present first-principles calculations of the electron-temperature dependent dielectric response of hot electrons in plasmonic metals, including direct interband and phonon-assisted intraband transitions, facilitating complete theoretical predictions of the time-resolved optical probe signatures in ultrafast laser experiments.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Light-Material Interactions in Energy Conversion (LMI); : Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; National Science Foundation (NSF)
Grant/Contract Number:
SC0001293; SC0004993; AC02-05CH11231
OSTI ID:
1388843
Alternate ID(s):
OSTI ID: 1290315
Journal Information:
Physical Review B, Vol. 94, Issue 7; Related Information: LMI partners with California Institute of Technology (lead); Harvard University; University of Illinois, Urbana-Champaign; Lawrence Berkeley National Laboratory; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 99 works
Citation information provided by
Web of Science

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Assistance of metal nanoparticles in photocatalysis – nothing more than a classical heat source journal January 2019
Direct optical excitation of dark plasmons for hot electron generation journal January 2019
Plasmonics of Au nanoparticles in a hot thermodynamic bath journal January 2019
Energy-tunable photocatalysis by hot carriers generated by surface plasmon polaritons journal January 2019
Ultrafast active control of UV light with plasmonic resonance on aluminum nanostripes journal May 2018
Hot carrier dynamics in a dispersionless plasmonic system journal December 2019
Multiscale Investigation of Femtosecond Laser Pulses Processing Aluminum in Burst Mode journal August 2018
Plasmonic performance of Au x Ag y Cu 1−x−y alloys from many-body perturbation theory journal May 2019
Hot carrier dynamics in plasmonic transition metal nitrides journal May 2018
Ab initio approach to lattice softening of an Al slab driven by collective electronic excitations after ultrashort laser pulse irradiation journal August 2019
Nonequilibrium phonon transport across nanoscale interfaces journal September 2019
Vibrational response and motion of carbon monoxide on Cu(100) driven by femtosecond laser pulses: Molecular dynamics with electronic friction journal December 2019
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Optoelectronic response of the type-I Weyl semimetals TaAs and NbAs from first principles journal January 2020
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Experimental and ab initio ultrafast carrier dynamics in plasmonic nanoparticles text January 2016
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