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Optimal block-tridiagonalization of matrices for coherent charge transport

Wimmer, Michael and Richter, Klaus (2009) Optimal block-tridiagonalization of matrices for coherent charge transport. Journal of Computational Physics 228 (23), pp. 8548-8565.

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Date of publication of this fulltext: 05 Aug 2009 13:57

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Other URL: http://dx.doi.org/10.1016/j.jcp.2009.08.001, http://arxiv.org/abs/0806.2739v1


Numerical quantum transport calculations are commonly based on a tight-binding formulation. A wide class of quantum transport algorithms requires the tight-binding Hamiltonian to be in the form of a block-tridiagonal matrix. Here, we develop a matrix reordering algorithm based on graph partitioning techniques that yields the optimal block-tridiagonal form for quantum transport. The reordered ...


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Item type:Article
Date:10 December 2009
Institutions:Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter
Projects:Graduiertenkolleg Nichtlinearität und Nichtgleichgewicht, SFB 689: Spinphänomene in reduzierten Dimensionen
Identification Number:
0806.2739arXiv ID
72.10.Bg; 02.70.−c; 02.10.OxPACS
Keywords:Coherent quantum transport; Recursive Green’s function algorithm; Block-tridiagonal matrices; Matrix reordering; Graph theory
Dewey Decimal Classification:500 Science > 530 Physics
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:7828
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