QUANTUM TRANSPORT BY NONADIABATIC AHARONOV-CASHER PHASE IN MESOSCOPICRINGS

We have studied the quantum transport by nonadiabatic Aharonov-Casher phase in mesoscopic rings embedded in textured electric fields. The qu antum transport of the electron is examined based on a one-dimensional quantum waveguide theory. Periodic behaviors of the transmission prob ability are found in the domain when the quantum phase approaches an a diabatic limit, whereas anomalous quantum transport is shown in the no nadiabatic domain. The difference between the angle of the spin and th at of the electric field is found to determine the detailed characteri stics of the nonadiabatic quantum phase and transport. The destructive pattern of the transmission probability is found to occur in accordan ce with the abrupt change of the persistent current in an isolated rin g.