Unconventional low-field magnetic response of a diffusive ring with   spin-orbit coupling
  We report an unconventional behavior of electron transport in the limit of zero magnetic flux in a one-dimensional disordered ring, be it completely random or any correlated one, subjected to Rashba spin-orbit (SO) coupling. It exhibits much higher circulating current compared to a fully perfect ring for a wide range of SO coupling yielding larger electrical conductivity which is clearly verified from our Drude weight analysis. 
Moumita Patra, Santanu K. Maiti
cond-mat.mes-hall