TITLE

Investigation of spurious velocity overshoot using Monte Carlo data

AUTHOR(S)
Grasser, T.; Kosina, H.; Selberherr, S.
PUB. DATE
September 2001
SOURCE
Applied Physics Letters;9/17/2001, Vol. 79 Issue 12, p1900
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
For the simulation of state-of-the-art devices, hydrodynamic and energy transport models account for nonlocal effects. Although these models have been available for several decades, there are still unresolved issues. One of these issues is the occurrence of spurious peaks in the velocity profile which are inherent to both Stratton’s [Phys. Rev. 126, 2002 (1962)] and Blo\tekjær’s [IEEE Trans.Electron Devices 17, 38 (1970)] models. We investigate the origin of these peaks by introducing relaxation times, mobilities, and closure relations directly from a coupled Monte Carlo simulator. From these simulations, we conclude that the spurious peaks are a direct result of the truncation of the infinite moment series and the inaccuracies in the physical models. © 2001 American Institute of Physics.
ACCESSION #
5145185

 

Related Articles

  • One-dimensional hot-electron transport in quantum-well wires of polar semiconductors. Ghosal, A.; Chattopadhyay, D.; Bhattacharyya, A. // Journal of Applied Physics;4/1/1986, Vol. 59 Issue 7, p2511 

    Presents a study which obtained in a drifted Maxwellian model and by the Monte Carlo technique the velocity-field characteristics of hot electrons moving one dimensionally in the lowest subband of a polar semiconductor quantum-well wire. Model and methods; Results and discussions; Conclusion.

  • Velocity Distribution of Ions Incident on a Wafer in Two Frequency Capacitively-Coupled Plasma. Wakayama, G.; Nanbu, K. // AIP Conference Proceedings;2003, Vol. 663 Issue 1, p1079 

    The dynamic structure of two-frequency capacitively-coupled plasmas (2f-CCP) were examined using the self-consistent Particle-in-Cell/Monte Carlo (PIC/MC) simulation. At first the dependence of the discharge structure on wafer biasing conditions were investigated using one-dimensional (1D)...

  • Estimation of Wind Speed Distribution Using Markov Chain Monte Carlo Techniques. Wan-Kai Pang; Forster, Jonathan J.; Troutt, Marvin D. // Journal of Applied Meteorology;Aug2001, Vol. 40 Issue 8 

    Describes the parameter estimation of wind speed distribution with Markov Chain Monte Carlo (MCMC) techniques. Use of Weibull distribution in statistical distribution; Applicability of the MCMC sample in summarizing the posterior uncertainty of parameters; Availability of the exact probability...

  • Tropical Cyclone Wind Characteristics for the Bangladesh Coast Using Monte Carlo Simulation. Islam, Tanveerul; Peterson, Richard E. // Journal of Applied Sciences;2008, Vol. 8 Issue 7, p1249 

    The aim of this study is to understand the characteristics of landfalling tropical cyclones along the coast of Bangladesh by estimating the maximum wind speed and the maximum surge height in different locations during cyclone landfall. Using the Monte Carlo simulation procedure, 1000 simulated...

  • Impact of wind gusts on sea surface height in storm surge modelling, application to the North Sea. Grinten, R.; Vries, J.; Swart, H. // Natural Hazards;Apr2013, Vol. 66 Issue 3, p1313 

    Storm surge models usually do not take into account the explicit effect of wind gusts on the sea surface height. However, as the wind speed enters quadratically into the shallow water equations, short-term fluctuations around the mean value do not average out. We investigate the impact of...

  • Theory of the velocity-field relation in AlGaAs. Brennan, K. F.; Park, D. H.; Hess, K.; Littlejohn, M. A. // Journal of Applied Physics;5/15/1988, Vol. 63 Issue 10, p5004 

    Focuses on a study which presented Monte Carlo calculations of the steady-state electron drift velocity as a function of applied electric field in aluminum[sub0.32]gallium[sub0.68]arsenic. Advantages of the Monte Carlo method; Description of the model; Results of the calculations.

  • Comparison of velocity distribution functions in an argon shock wave between experiments and Monte Carlo calculations for Lennard-Jones potential. Matsumoto, Hiroaki; Koura, Katsuhisa // Physics of Fluids A;Dec91, Vol. 3 Issue 12, p3038 

    The velocity distribution functions (VDF’s) in an argon normal shock wave at an upstream high Mach number 7.183 and low temperature 16 K are calculated using the null-collision direct-simulation Monte Carlo method for the Lennard-Jones (LJ) potential to compare with the experimental...

  • Statistical estimates of the influence of the source divergence angle on the characteristics of acoustic radiation transmitted through the atmosphere. Belov, V. V.; Burkatovskaya, Yu. B.; Krasnenko, N. P.; Shamanaeva, L. G. // Russian Physics Journal;Dec2009, Vol. 52 Issue 12, p1264 

    The method of statistical simulation (Monte Carlo) is used for the first time to study the influence of the angular source divergence on the characteristics of transmitted acoustic radiation with allowance for the multiple scattering contribution. Results of calculations for a point source of...

  • Translational Nonequilibrium of a Gas by Flow in Vacuum through the Constant Cross-section Channel. Kulikov, S. V. // AIP Conference Proceedings;2005, Vol. 762 Issue 1, p198 

    The Monte Carlo nonstationary statistical simulation (another name DSMC) of gas flow in vacuum was performed for the case of a constant cross-section channel. Molecules were considered as hard spheres of equal diameters without internal structure. The modeling was carried out in one-dimensional...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics