Quantum potential approach to modeling nanoscale MOSFETs

Shaikh S. Ahmed, Dragica Vasileska, Clemens Heitzinger, Christian Ringhofer

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We propose a novel parameter-free quantum potential scheme for use in conjunction with particle-based simulations. The method is based on a perturbation theory around thermodynamic equilibrium and leads to an effective potential scheme in which the size of the electron depends upon its energy. The approach has been tested on the example of a MOS-capacitor by retrieving the correct sheet electron density. It has also been used in simulations of a 25 nm n-channel nanoscale MOSFET with high substrate doping density. We find that the use of the quantum potential approach gives rise to a threshold voltage shift of about 220 mV and drain current degradation of about 30%.

Original languageEnglish (US)
Pages (from-to)57-61
Number of pages5
JournalJournal of Computational Electronics
Issue number1-2
StatePublished - Apr 2005


  • Monte Carlo simulations
  • Nanoscale MOSFETs
  • Quantum potential
  • SOI devices

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Modeling and Simulation
  • Electrical and Electronic Engineering


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