Eigenvalue solvers for atomistic simulations of electronic structures with NEMO-3DOther Nanotechnology Publications
AbstractThe atomistic simulations of electronic structures, using a tight binding model with millions of atoms, require solution of very large sparse Hermitian eigenvalue problems. To obtain the eigenpairs of interest in the interior of the spectrum, we must take advantage of the most efficient parallel numerical algorithms. Several methods have been developed and implemented in Nanoelectronic Modeling software package NEMO-3D, including (P)ARPACK, (Block) Lanczos and Tracemin. In this paper, the performance and tradeoffs of these algorithms for realistic models are discussed. The effectiveness of code optimization techniques such as SSE2 vectorization is also presented.
- Tight Binding,
- Quantum dot,
Date of this Version7-1-2008
Citation InformationMaxim Naumov, Sunhee Lee, Ben Haley, H. Bae, et al.. "Eigenvalue solvers for atomistic simulations of electronic structures with NEMO-3D" (2008)
Available at: http://works.bepress.com/gerhard_klimeck/221/