Delta-f and hydrodynamic methods for semiconductor transport

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This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory. The authors have developed a prototype plug-and-play (PCUBED) environment based upon a C++ class called a fragment. A fragment is a universal object that can represent any data type. Fragments provide an excellent intuitive approach to the development of an efficient architecture, as well as providing a common data implementation within and between codes. As a result, the PCUBED environment allows for the generation of many different codes within a common framework. At this time, there are seven major codes ... continued below

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20 pages

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Thode, L. E.; Hotchkiss, R.; Gray, M.; Snell, C. & Barnes, D. November 1998.

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Description

This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory. The authors have developed a prototype plug-and-play (PCUBED) environment based upon a C++ class called a fragment. A fragment is a universal object that can represent any data type. Fragments provide an excellent intuitive approach to the development of an efficient architecture, as well as providing a common data implementation within and between codes. As a result, the PCUBED environment allows for the generation of many different codes within a common framework. At this time, there are seven major codes implemented within the PCUBED environment. Input, output, restart, setup, and graphics are programmed using a high-level approach to insure human efficiency. In contrast, computationally intensive algorithms are programmed using a low-level approach to insure computational efficiency. Fragments provide a straightforward approach to switch between high-level and low-level programming. PCUBED has been tested on a Macintosh PowerPC; on IBM, SUN, HP, and SGI workstations; and on the CRAY YMP and Cray T3D. Using this environment, the authors have incorporated a drift diffusion, energy balance, hydrodynamic, and Monte Carlo model for metal-oxide semiconductor field-effect transistors (MOSFETs) into a single architecture. With all the models in a common framework, they have investigated the noise characteristics of hybrid and delta-f models. Although hybrid and delta-f models appear viable in one dimension, the noise level of higher order transport coefficients in two and three dimensions makes the utility of such combined methods questionable.

Physical Description

20 pages

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OSTI as DE00677158

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  • Other Information: Supercedes report DE99000870; PBD: [1998]

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  • Other: DE99000870
  • Report No.: LA-UR--98-1440
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/677158 | External Link
  • Office of Scientific & Technical Information Report Number: 677158
  • Archival Resource Key: ark:/67531/metadc710170

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  • November 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • May 5, 2016, 7:26 p.m.

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Thode, L. E.; Hotchkiss, R.; Gray, M.; Snell, C. & Barnes, D. Delta-f and hydrodynamic methods for semiconductor transport, report, November 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc710170/: accessed December 10, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.