Spin-charge conversion in disordered two-dimensional electron gases lacking inversion symmetry
نویسندگان
چکیده
منابع مشابه
Room-Temperature Spin Memory in Two-Dimensional Electron Gases
Time-resolved Kerr reflectivity of two-dimensional electron gases in II-VI semiconductors provides a direct measure of electron spin precession and relaxation over a temperature range from 4 to 300 kelvin. The introduction of n-type dopants increases the electronic spin lifetimes several orders of magnitude relative to insulating counterparts, a trend that is also observed in doped bulk semicon...
متن کاملCharge and spin dynamics in a two-dimensional electron gas.
A number of time-resolved optical experiments probing and controlling the spin and charge dynamics of the high-mobility two-dimensional electron gas in a GaAs/AlGaAs heterojunction are discussed. These include time-resolved reflectivity, luminescence, transient grating, magneto-optical Kerr effect, and electro-optical Kerr effect experiments. The optical experiments provide information on the c...
متن کاملSpin-charge coupling effects in a two-dimensional electron gas
In these lecture notes we study the disordered two-dimensional electron gas in the presence of Rashba spin-orbit coupling, by using the Keldysh nonequilibrium Green function technique. We describe the effects of the spin-orbit coupling in terms of a SU(2) gauge field and derive a generalized Boltzmann equation for the charge and spin distribution functions. We then apply the formalism to discus...
متن کاملNonlinear screening in two-dimensional electron gases.
We have performed self-consistent calculations of the nonlinear screening of a point charge Z in a two-dimensional electron gas using a density functional theory method. We find that the screened potential for a Z=1 charge supports a bound state even in the high-density limit where one might expect perturbation theory to apply. To explain this behavior, we prove a theorem to show that the resul...
متن کاملElectron Spin Dynamics in Semiconductors without Inversion Symmetry
Recent consideration of spin based quantum computation, optical switches, magnetic memory cells, etc. [1] mandates an improved understanding of spin dynamics and, in particular, the spin relaxation rate [2]. The most promising materials for device purposes, III-V and II-VI compounds, have been shown [3] to have spin relaxation rates dominated by the D’yakonov-Perel’ (DP) mechanism at moderate t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2017
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.96.205305