On simulation of local fluxes in molecular junctions
Abstract
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.
- Authors:
-
- Univ. of California, San Diego, CA (United States). Dept. of Chemistry and Biochemistry
- Univ. of Copenhagen (Denmark). Dept. of Chemistry
- Publication Date:
- Research Org.:
- Univ. of California, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1507142
- Alternate Identifier(s):
- OSTI ID: 1438285
- Grant/Contract Number:
- SC0018201
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Chemical Physics
- Additional Journal Information:
- Journal Volume: 148; Journal Issue: 20; Journal ID: ISSN 0021-9606
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; benzenedithiol molecular junction; local fluxes; non equilibrium Green functions
Citation Formats
Cabra, Gabriel, Jensen, Anders, and Galperin, Michael. On simulation of local fluxes in molecular junctions. United States: N. p., 2018.
Web. doi:10.1063/1.5029252.
Cabra, Gabriel, Jensen, Anders, & Galperin, Michael. On simulation of local fluxes in molecular junctions. United States. https://doi.org/10.1063/1.5029252
Cabra, Gabriel, Jensen, Anders, and Galperin, Michael. Mon .
"On simulation of local fluxes in molecular junctions". United States. https://doi.org/10.1063/1.5029252. https://www.osti.gov/servlets/purl/1507142.
@article{osti_1507142,
title = {On simulation of local fluxes in molecular junctions},
author = {Cabra, Gabriel and Jensen, Anders and Galperin, Michael},
abstractNote = {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.},
doi = {10.1063/1.5029252},
journal = {Journal of Chemical Physics},
number = 20,
volume = 148,
place = {United States},
year = {2018},
month = {5}
}
Web of Science
Figures / Tables:

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Works referencing / citing this record:
Helical orbitals and circular currents in linear carbon wires
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Figures / Tables found in this record: