Effective mass (m*) is defined as: where x, y, z are the directions in the reciprocal Cartesian space (2Ï€/A), En(k) is the dispersion relation for the n-th electronic band. The explicit form of the ...
FDTDX is an efficient open-source Python package for the simulation and design of three-dimensional photonic nanostructures using the Finite-Difference Time-Domain (FDTD) method. Built on JAX, it ...