DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Electronically Nonadiabatic Structural Transformations Promoted by Electron Beams

Journal Article · · Advanced Functional Materials

Abstract The use of scanning transmission electron microscopes to manipulate substitutional defects in graphene has recently been demonstrated and modeled using ground state molecular dynamics, but the role of electronic excitations induced through inelastic electron scattering in promoting these transformations has so‐far remained unexplored. Here, probed are the effects of electronic excitation on the structural dynamics of graphene quantum dots of differing edge morphologies that are substitutionally doped with silicon or phosphorous. The ground and excited state potential energy barriers for pyramidal inversion of these nonplanar doped species are evaluated using time‐dependent density functional theory. Optically bright excited states in which the barrier is decreased are identified in the low energy region of the electronic spectrum, suggesting that photoexcitation can modulate the reactivity of defects in graphene under electron beam irradiation. Coupling matrix elements between these inversion‐favoring excited states and the ground state and time‐domain simulations of the material's response to a point charge impulse indicate that focusing an electron beam near the defect can also lead to population of these states, suggesting that beam electrons incident on a defect can both excite the material to an inversion‐favoring state and transfer momentum to the defect to initiate the inversion.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; USDOE
Grant/Contract Number:
AC05-00OR22725; DE‐AC05‐00OR22725
OSTI ID:
1524863
Alternate ID(s):
OSTI ID: 1525534
Journal Information:
Advanced Functional Materials, Vol. TBD, Issue N/A; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (65)

Molecular Single-Bond Covalent Radii for Elements 1-118 journal January 2009
Building Structures Atom by Atom via Electron Beam Manipulation journal August 2018
Heteroatom-doped graphene materials: syntheses, properties and applications journal January 2014
Unconventional superconductivity in magic-angle graphene superlattices journal March 2018
Entanglement, excitations, and correlation effects in narrow zigzag graphene nanoribbons journal October 2016
Spin-spin and spin-orbit interactions in nanographene fragments: A quantum chemistry approach journal March 2012
Silicon–Carbon Bond Inversions Driven by 60-keV Electrons in Graphene journal September 2014
Electronic Structure and Stability of Semiconducting Graphene Nanoribbons journal December 2006
Accurate spin-dependent electron liquid correlation energies for local spin density calculations: a critical analysis journal August 1980
A grid-based Bader analysis algorithm without lattice bias journal January 2009
Engineering single-atom dynamics with electron irradiation journal May 2019
Spin-unrestricted character of Kohn-Sham orbitals for open-shell systems journal November 1995
Manipulating low-dimensional materials down to the level of single atoms with electron irradiation journal September 2017
Synthesis, Electronic Structure, and Raman Scattering of Phosphorus-Doped Single-Wall Carbon Nanotubes journal June 2009
Single-atom spectroscopy of phosphorus dopants implanted into graphene journal February 2017
A fast and robust algorithm for Bader decomposition of charge density journal June 2006
Synthesis of Phosphorus-Doped Graphene and its Multifunctional Applications for Oxygen Reduction Reaction and Lithium Ion Batteries journal July 2013
Simulating One-Photon Absorption and Resonance Raman Scattering Spectra Using Analytical Excited State Energy Gradients within Time-Dependent Density Functional Theory journal November 2013
Stability conditions and nuclear rotations in the Hartree-Fock theory journal November 1960
Spin polarization and annihilation for radicals and diradicals journal January 2005
Spin contamination in density functional theory journal December 1993
Self‐consistent molecular orbital methods. XVIII. Constraints and stability in Hartree–Fock theory journal April 1977
Is the Tamm-Dancoff Approximation Reliable for the Calculation of Absorption and Fluorescence Band Shapes? journal September 2013
NWChem: A comprehensive and scalable open-source solution for large scale molecular simulations journal September 2010
Synthesis and characterization of triangulene journal February 2017
Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene journal July 2008
Synthetic organic spin chemistry for structurally well-defined open-shell graphene fragments journal February 2011
Nitrogen-Doped Graphene and Its Application in Electrochemical Biosensing journal March 2010
Two-dimensional gas of massless Dirac fermions in graphene journal November 2005
The radical character of the acenes: A density matrix renormalization group study journal October 2007
Half-metallicity and spin-contamination of the electronic ground state of graphene nanoribbons and related systems: An impossible compromise? journal September 2011
Density‐functional thermochemistry. III. The role of exact exchange journal April 1993
Simple preparation of nanoporous few-layer nitrogen-doped graphene for use as an efficient electrocatalyst for oxygen reduction and oxygen evolution reactions journal March 2013
Polyradical Character of Triangular Non-Kekulé Structures, Zethrenes, p -Quinodimethane-Linked Bisphenalenyl, and the Clar Goblet in Comparison: An Extended Multireference Study journal February 2016
Single-Reference ab Initio Methods for the Calculation of Excited States of Large Molecules journal November 2005
Placing single atoms in graphene with a scanning transmission electron microscope journal September 2017
Nudged elastic band method for finding minimum energy paths of transitions
  • JÓNsson, Hannes; Mills, Greg; Jacobsen, Karsten W.
  • Proceedings of the International School of Physics, Classical and Quantum Dynamics in Condensed Phase Simulations https://doi.org/10.1142/9789812839664_0016
conference November 2011
Atoms in molecules journal January 1985
Electric Field Effect in Atomically Thin Carbon Films journal October 2004
Quantized conductance of a suspended graphene nanoconstriction journal June 2011
Improved All-Carbon Spintronic Device Design journal January 2015
Phosphorus doped graphene nanosheets for room temperature NH3 sensing journal January 2014
Direct visualization of the 3D structure of silicon impurities in graphene journal February 2019
Spin filter, spin amplifier and spin diode in graphene nanodisk journal February 2009
Molecular mechanics valence bond methods for large active spaces. Application to conjugated polycyclic hydrocarbons journal January 1994
Ultrafast electron dynamics in epitaxial graphene investigated with time- and angle-resolved photoemission spectroscopy journal April 2015
Towards atomically precise manipulation of 2D nanostructures in the electron microscope journal September 2017
Direct View of Hot Carrier Dynamics in Graphene journal July 2013
Pure spin current and phonon thermoelectric transport in a triangulene-based molecular junction journal January 2018
Phosphorus-doped graphene and (8, 0) carbon nanotube: Structural, electronic, magnetic properties, and chemical reactivity journal May 2013
The First Detection of a Clar's Hydrocarbon, 2,6,10-Tri- tert -Butyltriangulene:  A Ground-State Triplet of Non-Kekulé Polynuclear Benzenoid Hydrocarbon journal December 2001
Electronic Transport and Mechanical Properties of Phosphorus- and Phosphorus−Nitrogen-Doped Carbon Nanotubes journal June 2009
Ab Initio Calculation of Vibrational Absorption and Circular Dichroism Spectra Using Density Functional Force Fields journal November 1994
Synthesis of a derivative of triangulene; the first non-kekulé polynuclear aromatic journal January 1995
Some reasons not to use spin projected density functional theory journal October 1996
Fate of the open-shell singlet ground state in the experimentally accessible acenes: A quantum Monte Carlo study journal April 2018
Building Structures Atom by Atom via Electron Beam Manipulation journal February 2019
Single-Reference ab initio Methods for the Calculation of Excited States of Large Molecules journal January 2006
Development of the Colle-Salvetti correlation-energy formula into a functional of the electron density text January 1988
The radical character of the acenes: A density matrix renormalization group study text January 2007
Quantized conductance of a suspended graphene nanoconstriction text January 2011
Silicon-carbon bond inversions driven by 60 keV electrons in graphene text January 2014
Fate of the open-shell singlet ground state in the experimentally accessible acenes: a quantum Monte Carlo study text January 2018
Direct visualization of the 3D structure of silicon impurities in graphene text January 2018
Electric Field Effect in Atomically Thin Carbon Films text January 2004