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For Effective mass, enter the electron effective mass m (SI unit: kg). The default is the free electron mass me_const.
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For Field line coordinate, enter an appropriate variable flc (SI unit: m) that is (approximately) proportional to the arc length along the electric field line across the potential barrier domain selection. The default is the first coordinate of the global coordinate system. The variable should be valid within the potential barrier domain selection and its isosurfaces should be approximately parallel to the equipotential surfaces in the domain.
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In general a Curvilinear Coordinates physics interface can be used to compute the (approximated) electric field line coordinate, or each of the boundary coordinates below. See the Application Libraries example Semiconductor_Module/Verification_Examples/heterojunction_tunneling
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For 2D and 3D components, enter Boundary coordinate bndc (SI unit: m). The default is the second coordinate of the global coordinate system. See below for more details.
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For 2D axisymmetry and 3D components, enter Boundary coordinate 2 bndc2 (SI unit: m). The default is the Z coordinate of the global coordinate system. For this input and the input for bndc above, enter an appropriate variable that can be used to form the boundary coordinate system of the boundary selection of the subnode. The variable should be valid within the potential barrier domain selection and its isosurfaces should be approximately parallel to the electric field lines in the domain.
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