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Andrei Manolescu School of Science and Engineering

Spin currents in quantum rings. Andrei Manolescu School of Science and Engineering. What is Spin. The electron rotates around the nucleus  orbit. e. e. The electron rotates around itself  spin  magnetic dipole. WHAT is spin-orbit interaction. In atoms.

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Andrei Manolescu School of Science and Engineering

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  1. Spin currents in quantum rings Andrei Manolescu School of Science and Engineering

  2. What is Spin The electron rotates around the nucleus  orbit e e The electron rotates around itself  spin  magnetic dipole

  3. WHAT is spin-orbit interaction In atoms The motion seen by the electron: The nucleus rotates around the electronand creates a magnetic field The motion seen from the lab frame: The electron rotates around the nucleus e e e In crystals

  4. What is spintronics The electron has electric charge  electric current  Electronics: information carried by electric signals The electron has spin  magnetic (spin) current  Spintronics: information carried by magnetic signals The spin-orbit interaction allows the influence of electric fields on spin currents

  5. NANOELECTRONIC DEVICES GaAs/AlGaAs heterostructure Quantum wires Quantum ring

  6. TYPES OF SPIN-ORBIT Interaction in nanostructures Rashba: due to the electric field of the vertical confinement Dresselhaus: due to the electric field of the crystal

  7. SPIN CURRENTS INDUCED IN NANORINGS Ring exposed to two dipolar electric fields with a relative angle 0 0 Spin current Charge current M. Niţă, D.C. Marinescu, A. Manolescu, V. Guðmundsson, Phys. Rev. B 2011

  8. SPIN INTERFERRENCE WITH R+D SOI

  9. The nanophysics group at RU Andrei Manolescu Sigurdur Erlingsson Halldor Svavarsson Agust Valfells Gunnar Thorgilsson Kristinn Torfason Anton Heidar Thorolfsson Csaba Daday

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