Quadratic response theory for spin-orbit coupling in semiconductor heterostructures

Details Quadratic response theory for spin-orbit coupling in semiconductor heterostructures Quadratic response theory for spin-orbit coupling in semiconductor heterostructures

2005-06-18

arxiv.org/abs/cond-mat/0506465v2

Phys. Rev. B 72, 165344 (2005)

Physics

Condensed Matter

Materials Science

20 pages, no figures, RevTeX4; v2: final published version

Scientific paper

10.1103/PhysRevB.72.165344

This paper examines the properties of the self-energy operator in lattice-matched semiconductor heterostructures, focusing on nonanalytic behavior at small values of the crystal momentum, which gives rise to long-range Coulomb potentials. A nonlinear response theory is developed for nonlocal spin-dependent perturbing potentials. The ionic pseudopotential of the heterostructure is treated as a perturbation of a bulk reference crystal, and the self-energy is derived to second order in the perturbation. If spin-orbit coupling is neglected outside the atomic cores, the problem can be analyzed as if the perturbation were a local spin scalar, since the nonlocal spin-dependent part of the pseudopotential merely renormalizes the results obtained from a local perturbation. The spin-dependent terms in the self-energy therefore fall into two classes: short-range potentials that are analytic in momentum space, and long-range nonanalytic terms that arise from the screened Coulomb potential multiplied by a spin-dependent vertex function. For an insulator at zero temperature, it is shown that the electronic charge induced by a given perturbation is exactly linearly proportional to the charge of the perturbing potential. These results are used in a subsequent paper to develop a first-principles effective-mass theory with generalized Rashba spin-orbit coupling.

Affiliated with

Also associated with

No associations

Rating

Quadratic response theory for spin-orbit coupling in semiconductor heterostructures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Quadratic response theory for spin-orbit coupling in semiconductor heterostructures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quadratic response theory for spin-orbit coupling in semiconductor heterostructures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-459055