Nonlinear Spin-Charge Dynamics in a Driven Double Quantum Dot

Details Nonlinear Spin-Charge Dynamics in a Driven Double Quantum Dot Nonlinear Spin-Charge Dynamics in a Driven Double Quantum Dot

2009-06-26

arxiv.org/abs/0906.4854v1

Physical Review B 79, 245321 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures

Scientific paper

10.1103/PhysRevB.79.245321

The coupled nonlinear coordinate and spin dynamics of an electron in a double quantum dot with spin-orbit interaction is studied semiclassically. The system is driven by an electric field with the frequency matching the orbital or the Zeeman resonance in magnetic field. Calculated evolution of the spin state is crucially sensitive to the irregularities in the spatial motion and the geometry of the host nanostructure. The resulting spin-flip Rabi frequency has an unusual dependence on the field amplitude, demonstrating approach to the chaotic spin motion. In turn, the orbital dynamics depends strongly on the spin evolution due to the spin-dependent term in the electron velocity.

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