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Title: On simulation of local fluxes in molecular junctions

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.5029252· OSTI ID:1507142

We present a pedagogical review of the current density simulation in molecular junction models indicating its advantages and deficiencies in analysis of local junction transport characteristics. In particular, we argue that current density is a universal tool which provides more information than traditionally simulated bond currents, especially when discussing inelastic processes. However, current density simulations are sensitive to the choice of basis and electronic structure method. We note that while discussing the local current conservation in junctions, one has to account for the source term caused by the open character of the system and intra-molecular interactions. Our considerations are illustrated with numerical simulations of a benzenedithiol molecular junction.

Research Organization:
Univ. of California, San Diego, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0018201
OSTI ID:
1507142
Alternate ID(s):
OSTI ID: 1438285
Journal Information:
Journal of Chemical Physics, Vol. 148, Issue 20; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

References (42)

Correction to “Gate-Induced Intramolecular Charge Transfer in a Tunnel Junction: A Nonequilibrium Analysis” journal August 2013
Local Heating in Metal−Molecule−Metal Junctions journal October 2008
Ab Initio Analysis of Electron-Phonon Coupling in Molecular Devices journal September 2005
Electronic Transport in Mesoscopic Systems book January 2013
First-principles calculation of current density in molecular devices journal September 2011
Detection of heating in current-carrying molecular junctions by Raman scattering journal October 2008
Local Current Density Calculations for Molecular Films from Ab Initio journal October 2015
Definition of current density in the presence of a non-local potential journal March 2008
Circular Currents in Molecular Wires journal August 2010
Uniqueness of conserved currents in quantum mechanics journal October 2003
Vortex structure of the tunneling flow in long-range electron transfer reactions journal May 1999
Visualizing coherent intermolecular dipole–dipole coupling in real space journal March 2016
Thermoelectric Effects in Nanoscale Junctions journal January 2009
Tunneling currents in electron transfer reactions in proteins journal June 1996
Vibrational and electronic heating in nanoscale junctions journal December 2010
A simple molecular orbital treatment of current distributions in quantum transport through molecular junctions journal November 2017
Optical spectroscopy of molecular junctions: Nonequilibrium Green’s functions perspective journal May 2016
Controlling local currents in molecular junctions journal September 2016
Ab initio spin-flip conductance of hydrogenated graphene nanoribbons: Spin-orbit interaction and scattering with local impurity spins journal July 2015
Measurement of Current-Induced Local Heating in a Single Molecule Junction journal June 2006
Many-Particle Physics book January 1990
Interatomic inelastic current journal March 2017
Real-space imaging of molecular structure and chemical bonding by single-molecule inelastic tunneling probe journal May 2014
Molecular rectifiers journal November 1974
Current density analysis of electron transport through molecular wires in open quantum systems journal May 2017
Current Patterns and Orbital Magnetism in Mesoscopic dc Transport journal September 2014
Local field effects in current transport through molecular electronic devices: Current density profiles and local nonequilibrium electron distributions journal August 2004
Local ionic and electron heating in single-molecule junctions journal October 2007
Tight-binding simulation of current-carrying nanostructures journal March 2002
Electron transport in molecular junctions journal December 2006
Real-Space Identification of Intermolecular Bonding with Atomic Force Microscopy journal September 2013
Gate-Induced Intramolecular Charge Transfer in a Tunnel Junction: A Nonequilibrium Analysis journal May 2013
Inelastic electron tunneling spectroscopy in molecular junctions: Peaks and dips journal December 2004
Exploring local currents in molecular junctions journal February 2010
Spin inelastic currents in molecular ring junctions journal July 2012
Many-Particle Physics book January 2000
Many-Particle Physics journal March 1982
Ab initio spin-flip conductance of hydrogenated graphene nanoribbons: spin- orbit interaction and scattering with local impurity sites text January 2015
Current Patterns and Orbital Magnetism in Mesoscopic dc Transport text January 2014
Ab initio spin-flip conductance of hydrogenated graphene nanoribbons: Spin-orbit interaction and scattering with local impurity spins text January 2015
Optical spectroscopy of molecular junctions: Nonequilibrium Green's functions perspective text January 2016
Local-field effects in current transport through molecular electronic devices: Current density profiles and local non-equilibrium electron distributions text January 2004

Cited By (4)

Helical orbitals and circular currents in linear carbon wires journal January 2019
Charge nonconservation of molecular devices in the presence of a nonlocal potential journal September 2019
Local-noise spectroscopy for nonequilibrium systems journal December 2018
Current Correlations in a Quantum Dot Ring: A Role of Quantum Interference journal May 2019

Figures / Tables (6)