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Title: Ab initio electron dynamics in high electric fields: Accurate prediction of velocity-field curves

Journal Article · · Physical Review. B

Electron dynamics in external electric fields governs the behavior of solid-state electronic devices. First-principles calculations enable precise predictions of charge transport in low electric fields. However, studies of high-field electron dynamics remain elusive due to a lack of accurate and broadly applicable methods. In this work, we develop an efficient approach to solve the real-time Boltzmann transport equation with both the electric field term and ab initio electron-phonon collisions. These simulations provide field-dependent electronic distributions in the time domain, allowing us to investigate both transient and steady-state transport in electric fields ranging from low to high (> 10 kV/cm). The broad capabilities of our approach are shown by computing nonequilibrium electron occupations and velocity-field curves in Si, GaAs, and graphene, obtaining results in quantitative agreement with experiment. Our approach sheds light on microscopic details of transport in high electric fields, including the dominant scattering mechanisms and valley occupation dynamics. Our results demonstrate quantitatively accurate calculations of electron dynamics in low to high electric fields, with broad application to power and micro-electronics, optoelectronics, and sensing.

Research Organization:
California Institute of Technology (CalTech), Pasadena, CA (United States); Univ. of California, Oakland, CA (United States); 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); Korea Foundation for Advanced Studies (KFAS)
Grant/Contract Number:
SC0021266; AC02-05CH11231
OSTI ID:
1853753
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 10 Vol. 104; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (75)

Hot Electrons in Germanium and Ohm's Law journal October 1951
Drift velocity of electrons and holes and associated anisotropic effects in silicon journal January 1971
wannier90: A tool for obtaining maximally-localised Wannier functions journal May 2008
BoltzWann: A code for the evaluation of thermoelectric and electronic transport properties with a maximally-localized Wannier functions basis journal January 2014
An updated version of wannier90: A tool for obtaining maximally-localised Wannier functions journal August 2014
Perturbo: A software package for ab initio electron–phonon interactions, charge transport and ultrafast dynamics journal July 2021
Electronic Structure book September 2020
Nonequilibrium Lattice Dynamics in Monolayer MoS 2 journal February 2021
Ultrafast Hot Carrier Dynamics in GaN and Its Impact on the Efficiency Droop journal July 2017
High-Field Transport and Velocity Saturation in Synthetic Monolayer MoS 2 journal June 2018
Fullerene-Based Switching Molecular Diodes Controlled by Oriented External Electric Fields journal November 2019
High-Field Electrical and Thermal Transport in Suspended Graphene journal February 2013
Electron–Phonon Interactions and the Intrinsic Electrical Resistivity of Graphene journal February 2014
Current saturation in zero-bandgap, top-gated graphene field-effect transistors journal September 2008
Above-bandgap voltages from ferroelectric photovoltaic devices journal January 2010
Ab initio electron-two-phonon scattering in GaAs from next-to-leading order perturbation theory journal March 2020
Simulations for the high‐speed response of GaN metal‐semiconductor‐metal photodetectors journal June 1994
Gunn effect in field-emission phenomena journal February 2005
Gunn oscillations in a self-switching nanodiode journal December 2008
High field density-functional-theory based Monte Carlo: 4H-SiC impact ionization and velocity saturation journal February 2009
High-field transport and velocity saturation in graphene journal July 2009
Semiconducting and other major properties of gallium arsenide journal October 1982
Monte Carlo algorithms for collisional broadening and intracollisional field effect in semiconductor high‐field transport journal September 1988
Mobility and saturation velocity in graphene on SiO2 journal August 2010
Monte Carlo evaluations of degeneracy and interface roughness effects on electron transport in AlGaN–GaN heterostructures journal July 2000
Perspective on density functional theory journal April 2012
Efficiency droop in InGaN/GaN blue light-emitting diodes: Physical mechanisms and remedies journal August 2013
Terahertz oscillations in an In 0.53 Ga 0.47 As submicron planar Gunn diode journal March 2014
Ab initio velocity-field curves in monoclinic β-Ga 2 O 3 journal July 2017
VI. The Field-Dependence of Electron Mobility in Germanium journal July 1956
The intervalley transfer mechanism of negative resistivity in bulk semiconductors journal December 1965
Velocity saturation in intrinsic graphene journal July 2009
Advanced capabilities for materials modelling with Quantum ESPRESSO journal October 2017
Many-body perturbation theory calculations using the yambo code journal May 2019
Electrons and Phonons book January 2001
Adiabatic density-functional perturbation theory journal August 1995
Long-range quadrupole electron-phonon interaction from first principles journal September 2020
Magnetotransport in semiconductors and two-dimensional materials from first principles journal April 2021
High-field transport in wide-band-gap semiconductors journal September 1975
Electron Mobility in Direct-Gap Polar Semiconductors journal August 1970
Efficient pseudopotentials for plane-wave calculations journal January 1991
Accurate and simple analytic representation of the electron-gas correlation energy journal June 1992
Improved tetrahedron method for Brillouin-zone integrations journal June 1994
Phonon dispersion relations and softening in photoexcited bismuth from first principles journal May 2007
Acoustic phonon scattering limited carrier mobility in two-dimensional extrinsic graphene journal March 2008
Comparative high-field magnetotransport of the oxypnictide superconductors R FeAsO 1 − x F x ( R = La , Nd) and SmFeAsO 1 − δ journal August 2008
Accurate G W self-energies in a plane-wave basis using only a few empty states: Towards large systems journal August 2008
Temperature-dependent resistivity of suspended graphene journal November 2010
High-field transport in two-dimensional graphene journal September 2011
Unraveling the acoustic electron-phonon interaction in graphene journal April 2012
Strong pressure-dependent electron-phonon coupling in FeSe journal June 2014
Electrical transport limited by electron-phonon coupling from Boltzmann transport equation: An ab initio study of Si, Al, and MoS 2 journal August 2015
Ab initio electron mobility and polar phonon scattering in GaAs journal November 2016
First-principles mode-by-mode analysis for electron-phonon scattering channels and mean free path spectra in GaAs journal February 2017
First-principles study of electron and hole mobilities of Si and GaAs journal January 2018
Charge transport in organic molecular semiconductors from first principles: The bandlike hole mobility in a naphthalene crystal journal March 2018
Magnetotransport phenomena in p -doped diamond from first principles journal November 2018
Giant Intrinsic Carrier Mobilities in Graphene and Its Bilayer journal January 2008
Limits on Charge Carrier Mobility in Suspended Graphene due to Flexural Phonons journal December 2010
Green’s-function approach to linear response in solids journal May 1987
High-Field Electrical Transport in Single-Wall Carbon Nanotubes journal March 2000
Spin Gunn Effect journal January 2006
Mobility of two-dimensional materials from first principles in an accurate and automated framework journal November 2018
Transient hot-carrier dynamics and intrinsic velocity saturation in monolayer Mo S 2 journal January 2020
Predicting charge transport in the presence of polarons: The beyond-quasiparticle regime in SrTiO 3 journal December 2019
Toward precise simulations of the coupled ultrafast dynamics of electrons and atomic vibrations in materials journal April 2021
The Monte Carlo method for the solution of charge transport in semiconductors with applications to covalent materials journal July 1983
Phonons and related crystal properties from density-functional perturbation theory journal July 2001
Theory of the Gunn effect journal January 1964
Electric Field Effect in Atomically Thin Carbon Films journal October 2004
On the Construction and Comparison of Difference Schemes journal September 1968
First-principles dynamics of electrons and phonons* journal November 2016
Energy Relaxation Effect of Hot Electrons in GaAs journal August 1974
Charge Transport Phenomena Unique to Diamond journal January 2014
Condensed Matter in a Nutshell book January 2011