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Article: An approximate framework for quantum transport calculation with model order reduction
Title | An approximate framework for quantum transport calculation with model order reduction |
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Authors | |
Keywords | Model order reduction Sparse matrices NEGF Non-equilibrium transport Low-rank approximation |
Issue Date | 2015 |
Publisher | Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/jcp |
Citation | Journal of Computational Physics, 2015, v. 286, p. 49-61 How to Cite? |
Abstract | A new approximate computational framework is proposed for computing the non-equilibrium charge density in the context of the non-equilibrium Green's function (NEGF) method for quantum mechanical transport problems. The framework consists of a new formulation, called the X-formulation, for single-energy density calculation based on the solution of sparse linear systems, and a projection-based nonlinear model order reduction (MOR) approach to address the large number of energy points required for large applied biases. The advantages of the new methods are confirmed by numerical experiments. |
Persistent Identifier | http://hdl.handle.net/10722/211719 |
ISSN | 2023 Impact Factor: 3.8 2023 SCImago Journal Rankings: 1.679 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Chen, Q | - |
dc.contributor.author | Li, J | - |
dc.contributor.author | Yam, CY | - |
dc.contributor.author | Zhang, Y | - |
dc.contributor.author | Wong, N | - |
dc.contributor.author | Chen, G | - |
dc.date.accessioned | 2015-07-21T02:08:58Z | - |
dc.date.available | 2015-07-21T02:08:58Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Journal of Computational Physics, 2015, v. 286, p. 49-61 | - |
dc.identifier.issn | 0021-9991 | - |
dc.identifier.uri | http://hdl.handle.net/10722/211719 | - |
dc.description.abstract | A new approximate computational framework is proposed for computing the non-equilibrium charge density in the context of the non-equilibrium Green's function (NEGF) method for quantum mechanical transport problems. The framework consists of a new formulation, called the X-formulation, for single-energy density calculation based on the solution of sparse linear systems, and a projection-based nonlinear model order reduction (MOR) approach to address the large number of energy points required for large applied biases. The advantages of the new methods are confirmed by numerical experiments. | - |
dc.language | eng | - |
dc.publisher | Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/jcp | - |
dc.relation.ispartof | Journal of Computational Physics | - |
dc.rights | NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Computational Physics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Computational Physics, vol 286, 2015. DOI: 10.1016/j.jcp.2015.01.032 | - |
dc.rights | © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | - |
dc.subject | Model order reduction | - |
dc.subject | Sparse matrices | - |
dc.subject | NEGF | - |
dc.subject | Non-equilibrium transport | - |
dc.subject | Low-rank approximation | - |
dc.title | An approximate framework for quantum transport calculation with model order reduction | - |
dc.type | Article | - |
dc.identifier.email | Chen, Q: q1chen@hku.hk | - |
dc.identifier.email | Yam, CY: yamcy1@hku.hk | - |
dc.identifier.email | Wong, N: nwong@eee.hku.hk | - |
dc.identifier.email | Chen, G: ghchen@hku.hk | - |
dc.identifier.authority | Chen, Q=rp01688 | - |
dc.identifier.authority | Yam, CY=rp01399 | - |
dc.identifier.authority | Wong, N=rp00190 | - |
dc.identifier.authority | Chen, G=rp00671 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1016/j.jcp.2015.01.032 | - |
dc.identifier.scopus | eid_2-s2.0-84921854937 | - |
dc.identifier.hkuros | 245829 | - |
dc.identifier.volume | 286 | - |
dc.identifier.spage | 49 | - |
dc.identifier.epage | 61 | - |
dc.identifier.isi | WOS:000349600600004 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0021-9991 | - |