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Title: Analysis of ballistic transport in nanoscale devices by using an accelerated finite element contact block reduction approach

An accelerated Finite Element Contact Block Reduction (FECBR) approach is presented for computational analysis of ballistic transport in nanoscale electronic devices with arbitrary geometry and unstructured mesh. Finite element formulation is developed for the theoretical CBR/Poisson model. The FECBR approach is accelerated through eigen-pair reduction, lead mode space projection, and component mode synthesis techniques. The accelerated FECBR is applied to perform quantum mechanical ballistic transport analysis of a DG-MOSFET with taper-shaped extensions and a DG-MOSFET with Si/SiO{sub 2} interface roughness. The computed electrical transport properties of the devices obtained from the accelerated FECBR approach and associated computational cost as a function of system degrees of freedom are compared with those obtained from the original CBR and direct inversion methods. The performance of the accelerated FECBR in both its accuracy and efficiency is demonstrated.
Authors:
;  [1]
  1. College of Engineering and Science, Clemson University, Clemson, South Carolina 29634-0921 (United States)
Publication Date:
OSTI Identifier:
22314357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; DEGREES OF FREEDOM; EFFICIENCY; ELECTRONIC EQUIPMENT; FINITE ELEMENT METHOD; GEOMETRY; INTERFACES; MOSFET; NANOSTRUCTURES; PERFORMANCE; QUANTUM MECHANICS; ROUGHNESS; SILICA