NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2011, 2 (3), P. 29–36
COULOMB EFFECTS ON THE SPIN POLARIZATION OF QUANTUM RINGS
Andrei Manolescu – School of Science and Engineering, Reykjavik University, Reykjavik, Iceland, manoles@ru.is
Csaba Daday – School of Science and Engineering, Reykjavik University, Reykjavik, Iceland; Science Institute, University of Iceland, Reykjavik, Iceland
Vidar Gudmundsson – Science Institute, University of Iceland, Reykjavik, Iceland
We consider electrons in a circular nanoring of zero width, in magnetic field, and with Rashba spin-orbit interaction. We include the Coulomb interaction in the the “exact diagonalization” manner. The Coulomb interaction has strong effects on the spin polarization which may be totally different than for noninteracting electrons. Our current results include up to four electrons, but this number can easily be increased.
Keywords: quantum ring, spin-orbit interaction, Coulomb interaction
UDC 538.958
PACS 71.70.Ej, 73.21.Hb