Abstract
Transport in single and double barrier devices is studied using a Monte Carlo solver for the Wigner transport equation. This approach allows the effects of tunneling and scattering to be included. Several numerical methods have been improved to render the Wigner Monte Carlo technique more robust, including a newly developed particle annihilation algorithm. A self-consistent iteration scheme with the Poisson equation was introduced. The role of scattering and space charge effects on the electrical characteristics of n-i-n nanostructures, ultra-scaled double gate MOSFETs, and GaAs resonant tunneling diodes is demonstrated.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Palestri, P. et al.: Understanding quasi-ballistic transport in nano-MOSFETs: Part I—Scattering in the channel, and in the drain. IEEE Trans. Electron Devices 52(12), 2727 (2005)
Jungemann, C.: et al.: Investigation of strained Si/SiGe devices by MC simulation, Solid-State Electron. 48(8), 1417 (2004)
Gilbert, M. et al.: Phonon-assisted ballistic to diffusive crossover in silicon nanowire transistors. J. Appl. Phys. 98(9), 094303 (2005)
Kosina, H. et al.: A Monte Carlo method seamlessly linking quantum and classical transport calculations. J. Computational Electronics 2(2–4), 147 (2002)
Frensley, W.: Boundary conditions for open quantum systems driven far from equilibrium. Revi. Modern Phys. 62(3), 745 (1990)
Wigner, E.: On the quantum correction for thermodynamic equilibrium. Physi. Revi. 40, 749 (1932)
Gehring, A., Kosina, H.: Wigner-function based simulation of quantum transport in scaled dg-mosfets using the monte carlo method. J. Comput. Electr. 4(1–2), 67 (2005)
Kosina, H., Nedjalkov, M.: Handbook of theoretical and computational nanotechnology In: 10 chapter Wigner Function Based Device Modeling, pp. 731–763. American Scientific Publishers Los Angeles (2006), (in print)
Nedjalkov, M. et al.: Operator-split method for variance reduction in stochastic solutions for the wigner equation. Monte Carlo Methods Appl. 10(3–4), 461 (2004)
Author information
Authors and Affiliations
Corresponding author
Additional information
An erratum to this article can be found at http://dx.doi.org/10.1007/s10825-007-0146-6
Rights and permissions
About this article
Cite this article
Sverdlov, V., Grasser, T., Kosina, H. et al. Scattering and space-charge effects in Wigner Monte Carlo simulations of single and double barrier devices. J Comput Electron 5, 447–450 (2006). https://doi.org/10.1007/s10825-006-0041-6
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10825-006-0041-6