Rashba spin-orbit interaction in a circular quantum ring in the presence   of a magnetic field
  Exact wave functions and energy levels are obtained for an electron in a two-dimensional semiconductor circular quantum ring with a confining potential of finite depth in the presence of both an external magnetic field and the Rashba spin-orbit interaction. 
V. V. Kudryashov, A. V. Baran
math-ph cond-mat.mes-hall math.MP quant-ph