Spin relaxation mediated by spin-orbit and acoustic phonon interactions in a single-electron two-dimensional quantum dot

The spin relaxation caused by both spin-orbit and electron-acoustic phonon interactions in a two-dimensional quantum dot embedded into nanosize semiconductor slabs in a perpendicular magnetic field is studied. The spin relaxation rate due to electron coupling to both dilatational and flexural acoustic phonon modes is analytically and numerically evaluated. It is shown that the magnetic field dependency of the spin relaxation rate has allowed and forbidden regions and it can change in a very large region depending on magnetic field. The obtained results show that by means of gate-voltage it is possible to realize the confinement, which makes the required transition rate between certain states available.