Random walk approach to spin dynamics in a two-dimensional electron gas with spin-orbit coupling

Physics – Condensed Matter – Mesoscale and Nanoscale Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

10.1103/PhysRevB.82.155324

We introduce and solve a semi-classical random walk (RW) model that describes the dynamics of spin polarization waves in zinc-blende semiconductor quantum wells. We derive the dispersion relations for these waves, including the Rashba, linear and cubic Dresselhaus spin-orbit interactions, as well as the effects of an electric field applied parallel to the spin polarization wavevector. In agreement with fully quantum mechanical calculations [Kleinert and Bryksin, Phys. Rev. B \textbf{76}, 205326 (2007)], the RW approach predicts that spin waves acquire a phase velocity in the presence of the field that crosses zero at a nonzero wavevector, $q_0$. In addition, we show that the spin-wave decay rate is independent of field at $q_0$ but increases as $(q-q_0)^2$ for $q\neq q_0$. These predictions can be tested experimentally by suitable transient spin grating experiments.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Random walk approach to spin dynamics in a two-dimensional electron gas with spin-orbit coupling 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 Random walk approach to spin dynamics in a two-dimensional electron gas with spin-orbit coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Random walk approach to spin dynamics in a two-dimensional electron gas with spin-orbit coupling will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-435009

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.