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A numerical scheme utilizing a grid which is staggered in both space and time is proposed for the numerical solution of the (2+1)D Dirac equation in presence of an external electromagnetic potential. It preserves the linear dispersion relation of the free Weyl equation for wave vectors aligned with the grid and facilitates the implementation of open(More)
—The interplay of transport and magnetic properties in quantum well heterostructures, which comprise wells made of diluted magnetic semiconductors, e.g., GaMnAs, is theoretically investigated. The ferromagnetism in the magnetic wells is mediated by the carriers tunneling in and out of the wells, leading to a highly nonlinear coupling of resonant tunneling(More)
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