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The solution of a numerical problem encountered when adding a mobility model to a finite-element device simulator

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1 Author(s)
Lowther, R.E. ; Harris Semicond., Melbourne, FL, USA

The addition of a mobility model to a finite-element simulator was found to create a convergence problem identified with the addition of positive terms to the off-diagonal elements in the solution matrix. Fast convergence rates were recovered by carefully adjusting the solution matrix such that the off-diagonal elements in question were all nonpositive

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Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:7 ,  Issue: 8 )