Spin splitting of X-related donor impurity states in an AlAs barrier
arXiv:cond-mat/0502266 · doi:10.1103/PhysRevB.71.195320
Abstract
We use magnetotunneling spectroscopy to observe the spin splitting of the ground state of an X-valley-related Si-donor impurity in an AlAs barrier. We determine the absolute magnitude of the effective Zeeman spin splitting factors of the impurity ground state to be g$_{I}$= 2.2 $\pm $ 0.1. We also investigate the spatial form of the electron wave function of the donor ground state, which is anisotropic in the growth plane.