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Title: Accurate atomistic first-principles calculations of electronic stopping

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Quantum Simulations Group
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Quantum Simulations Group; Univ. of North Carolina, Chapel Hill, NC (United States). Dept. of Chemistry

In this paper, we show that atomistic first-principles calculations based on real-time propagation within time-dependent density functional theory are capable of accurately describing electronic stopping of light projectile atoms in metal hosts over a wide range of projectile velocities. In particular, we employ a plane-wave pseudopotential scheme to solve time-dependent Kohn-Sham equations for representative systems of H and He projectiles in crystalline aluminum. This approach to simulate nonadiabatic electron-ion interaction provides an accurate framework that allows for quantitative comparison with experiment without introducing ad hoc parameters such as effective charges, or assumptions about the dielectric function. Finally, our work clearly shows that this atomistic first-principles description of electronic stopping is able to disentangle contributions due to tightly bound semicore electrons and geometric aspects of the stopping geometry (channeling versus off-channeling) in a wide range of projectile velocities.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1251074
Alternate ID(s):
OSTI ID: 1181118
Report Number(s):
LLNL-JRNL-666354
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 1; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 105 works
Citation information provided by
Web of Science

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Cited By (12)

Stopping of Deuterium in Warm Dense Deuterium from Ehrenfest Time-Dependent Density Functional Theory: Stopping of Deuterium in Warm Dense Deuterium from Ehrenfest Time-Dependent Density Functional Theory journal June 2016
Towards an integrated modeling of the plasma-solid interface journal June 2019
Atom-by-atom fabrication with electron beams journal June 2019
ODE integration schemes for plane-wave real-time time-dependent density functional theory journal January 2019
Propagation of maximally localized Wannier functions in real-time TDDFT journal May 2019
Effect of resonant coherent excitation on the electronic stopping of slow channeled ions journal November 2019
Electronic stopping and proton dynamics in InP, GaP, and In0.5Ga0.5P from first principles journal October 2018
Negative differential conductivity in liquid aluminum from real-time quantum simulations journal October 2018
Stopping dynamics of ions passing through correlated honeycomb clusters text January 2016
Electronic stopping and proton dynamics in InP, GaP, and In$_{0.5}$Ga$_{0.5}$P from first principles text January 2018
Propagation of maximally localized Wannier functions in real-time TDDFT text January 2019
Anisotropy of electronic stopping power in graphite text January 2019