Spin-orbit coupling effect on persistent currents in a one-dimensional quantum ring with an Anderson impurity

摘要: Based on the finite $U$ slave boson method, we have investigated effect of Rashba spin-orbit (SO) coupling persistent charge and spin currents in a one-dimensional quantum ring with magnetic impurity. We used tight-binding model momentum space for electrons Anderson impurity It is shown that Kondo will decrease magnitude change curve shape significantly this side-coupled case. In presence SO coupling, drastically show oscillations strength ${\ensuremath{\alpha}}_{R}$. The direction current can be reversed by tuning For system an odd number electrons, there are abrupt jumps at position level crossing. also found circulating exist even without system.