Mixed stochastic-deterministic density functional theoretic decomposition of Kubo–Greenwood conductivities in the projector augmented wave formalism
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Pairing the accuracy of the Kohn–Sham density-functional framework with the efficiency of a stochastic algorithmic approach, mixed stochastic-deterministic density functional theory (mDFT) achieves a favorable computational scaling with system sizes and electronic temperatures. We employ the recently developed mDFT formalism to investigate the dynamic charge-transport properties of systems in the warm dense matter regime. The optical conductivity spectra are computed for single- and multi- component mixtures of carbon, hydrogen, and beryllium using two complementary approaches: Kubo–Greenwood in the mDFT picture and real-time time-dependent mDFT. We further devise a decomposition of the Onsager coefficients leading up to the Kubo–Greenwood spectra to exhibit contributions from the deterministic, stochastic, and mixed electronic state transitions at different incident photon energies.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)
- Grant/Contract Number:
- 89233218CNA000001; AC02-09CH11466
- Other Award/Contract Number:
- 20230322ER
20230323ER
- OSTI ID:
- 3017781
- Alternate ID(s):
- OSTI ID: 3017856
- Report Number(s):
- LA-UR--25-29854; 10.1063/5.0305405
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 1 Vol. 33; ISSN 1070-664X; ISSN 1089-7674
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Born-Oppenheimer molecular dynamics
Charge transport
Density functional theory
Drude model
Electrical conductivity
Fermi-Dirac distribution
Kubo-Greenwood formula
Plasma dynamics
Thermal conductivity
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Born-Oppenheimer molecular dynamics
Charge transport
Density functional theory
Drude model
Electrical conductivity
Fermi-Dirac distribution
Kubo-Greenwood formula
Plasma dynamics
Thermal conductivity