Dependence on uniaxial stress of deep levels in III-V compound and group-IV elemental semiconductors

Abstract
The uniaxial-stress dependences of substitutional s- and p-bonded deep impurity levels in the semiconductors AlP, AlAs, AlSb, GaP, GaAs, GaSb, InP, InAs, InSb, Si, and Ge are studied theoretically for stresses applied along the [100], [110], and [111] directions. We find that stress applied along the [110] direction, in particular, causes splittings and shifts of deep levels associated with a point defect that can be used (i) to determine uniquely the symmetries of the levels (s-like or p-like) and (ii) to identify the site (anion or cation) of the associated impurity.