Tangential Magnetic Field Condition¶
The tangential magnetic field condition is a boundary condition given by
\[
\left. \tilde{\mathbf{H}} \times \mathbf{n} \right|_{\Gamma}
= \tilde{\mathbf{H}}_\text{ext},
\]
where \(\tilde{\mathbf{H}}_\text{ext}\) is the user-defined complex external magnetic field imposed on the boundary \(\Gamma\).