The Glessuw software provides code to calculate the retarded and less-than Green's function for a two-dimensional device with a rectangular grid. The input required to the code is a user supplied nearest-neighbor Hamiltonian. The code is written to run on matlab and automatically does the graph partitioning. This code is based on the nested dissection method and can handle the rectangular grids in reference . More complex grids require coupling of the code to METIS. Users will be able to see a speedup of up to ten times in calculations of Gless when compared to the recursive method .
 A nested dissection approach to modeling transport in nanodevices: Algorithms and applications, Ulrich Hetmaniuk, Yunqi Zhao, M. P. Anantram, International Journal for Numerical Methods in Engineering, vol. 95, pages 587-607, DOI: 10.1002/nme.4518 (2013)
 Two Dimensional Quantum Mechanical Modeling of Nanotransistors, A. Svizhenko, M. P. Anantram, T. R. Govindan, B. Biegel and R. Venugopal, J. of Appl. Phys., vol. 91, p. 2343 (2002)
Glessuw is one of the many software programs and tools created at the University of Washington available through our Express Licensing Program. These agreements have standard terms and conditions that allow for rapid licensing by companies, organizations, or individuals.