17 research outputs found
Spin stripes of the 2D electron gas in a periodic hyperfine field
A novel periodic spin structure induced in a two-dimensional electron
gas by a periodic hyperfine field is proposed and theoretically
studied. The periodic nuclear magnetization is created, via the
hyperfine electron-nuclear spin interaction, by the light induced
periodic electron spin grating. The optically excited electron spin
polarization rapidly vanishes after the laser beam grating is switched
off, while the inhomogeneous nuclear spin polarization remains for a
sufficiently long time, which makes possible the writing and storage of
information. Such a process represents a basis for nuclear spin
holography. The electron wave functions and energy spectra are
calculated. The conditions of the periodic structure parametric
excitation are obtained and the experimental feasibility is discussed.
The possible applications to future quantum computation and
communication devices are outlined
"Up-Conversion of Triple-Band OFDM UWB Signals by a Multimode VCSEL"
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