Electronic spin precession and interferometry from spin-orbital entanglement in a double quantum dot

Details Electronic spin precession and interferometry from spin-orbital entanglement in a double quantum dot Electronic spin precession and interferometry from spin-orbital entanglement in a double quantum dot

2005-12-14

arxiv.org/abs/cond-mat/0512324v3

Phys. Rev. Lett. 97, 247207 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Final version

Scientific paper

10.1103/PhysRevLett.97.247207

A double quantum dot inserted in parallel between two metallic leads allows to entangle the electron spin with the orbital (dot index) degree of freedom. An Aharonov-Bohm orbital phase can then be transferred to the spinor wavefunction, providing a geometrical control of the spin precession around a fixed magnetic field. A fully coherent behaviour is obtained in a mixed orbital/spin Kondo regime. Evidence for the spin precession can be obtained, either using spin-polarized metallic leads or by placing the double dot in one branch of a metallic loop.

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