EFFECT OF DEFORMATION ON SPIN SPLITTING IN QUASI-2D HOLE SYSTEMS

The effective Hamiltonian for holes in a 2D channel with in-plane unia xial deformation is obtained. Two-dimensional channels on a Si surface are studied in the approximation of a spherically symmetric valence b and and on the (100) and (110) surfaces taking account of the cubic sy mmetry. It is shown that the shift of the positions of the beats of th e Shubnikov-de Haas oscillations that is linear in the deformation is due to the nonequivalence of the compression-tension axis and the dire ction perpendicular to it in the plane on the (110) surface. (C) 1998 American Institute of Physics. [S1063-7834(98)03303-6].