Ionization of shallow impurities by the electric field in a random Coulomb potential
Zhdanova N. G., Kagan M. S., Landsberg E. G., Levkin L. V.
The ionization of shallow donors in germanium, which are located in the random potential of charged impurities, by an external electric field is found to be attributable to the Poole-Frenker effect. © 1995 American Institute of Physics.