Taking the first four moments of (2.2) into account yields the hydrodynamic model which, however, incorporates convective terms difficult to handle in a numerical simulator. If they are neglected, the following equation system can be derived (the expressions for holes are analogous and have been omitted)
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(2.8) |
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(2.9) |
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(2.10) |
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(2.11) |
A. Gehring: Simulation of Tunneling in Semiconductor Devices