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  1. Getting Exit Code 1

    Closed | Responses: 1

    Why is this problem happening??

    Program Finished :Exit Code is 1 Can’t read “total_vstep” :no such variable while executing “ expr...

  2. Getting job error.

    Closed | Responses: 3

    While running a simulations, after some time getting this error:

    “Problem launching job:

    child process exited abnormally”

    Can’t understand what the...

  3. Problem launching job error

    Closed | Responses: 2

    Hello, I didn’t change any default setting, but the tool is not performing the simulation.


  4. Error clarification

    Closed | Responses: 3


    I’m getting the following error when I run a simulation:

    can’t read “total vstep” : no such variable while executing


  5. How to do simulation on OMEN nanowire tool?

    Open | Responses: 3

    I have changed some input values and tried to simulate the structure but, it was taking around 3 hours to get simulated. Is there easy way to simulate nanowire structure using OMEN Nanowire...

  6. How is the continuous doping density profile implemented in omenwire?

    Open | Responses: 1


    I understand that to mimic the contacts we enforce a high doping density in the source/drain extension regions, and it is easy to do so in a continuum formulation, like the effective...

  7. Why does the potential show a singularity at the location where the boundary condition changes from Dirichlet to Neumann?

    Closed | Responses: 3

    At the gate side, there is a change of boundary condition from Dirichlet to Neumann as we move from the gate to the insulator. Mathematically, this will lead to a singularity in the solution...

  8. boundary conditions for the poisson equation

    Open | Responses: 2

    I have simulated a case where Vg = 0.4V and Vd =0V. However, when I look at the potential plot, it appears that the potential at the boundary where the gate is 0V. Is it simply a plotting...

  9. analytical expression for the poisson solve

    Open | Responses: 1

    May I know what is the rational behind the use of the analytical expression given in the answer I asked about the convergence criteria. In particular, is the analytical formula based on the...

  10. convergence criteria

    Open | Responses: 2

    In the input deck, the poisson convergence criterion is stated as 1e-3. What exactly is the convergence criteria used in omenwire? How much additional computational time will I need if I...

  11. fermi level

    Open | Responses: 2

    In determining the electron density, what fermi levels did you use at the source and drain?

    Thanks, George

  12. Default voltage values need be changed.

    Open | Responses: 2

    With the default device specifications, it seems that the default nanowire has a threshold voltage of ~ 0.6V. So, to drive the device into deep ON state, one should apply gate voltage, probably...

  13. OMEN Nanowire Supporting Document

    23 Feb 2009 | Downloads | Contributor(s): SungGeun Kim, Gerhard Klimeck, Mathieu Luisier

    This material supplements the first-time user guide for OMEN Nanowire with details concerning the limitation of the tool at large gate voltage. At large gate voltage, the calculations of the drain...

  14. Benjamin P Haley

    Ben received his B.S. in Physics from Purdue in 1998. He worked for Cummins Engine Co and Intel before attending graduate school at UC Davis. He received a Masters in Engineering Applied..., a resource for nanoscience and nanotechnology, is supported by the National Science Foundation and other funding agencies. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.