Schematic diagram of a one-dimensional double quantum ring. The angle between leads I and II is denoted by , the angle between the leads II and III is denoted by , and the radius of left (right) ring is denoted by aL (aR). The leads I and III are considered as the incoming and outgoing leads, respectively.
Spin-dependent electron transmission coefficients and as a function of electron energy (a) for an arbitrary Rashba constant (i.e., ) and (b) for an appropriate value of Rashba constant (i.e., ). (c) Spin-polarization P as a function of electron energy corresponding to Figs. 2(a) and 2(b) . Here, and .
(a) Contour map of spin-polarization of transmitted electrons as a function of angles and . (b) The graph of spin-polarization as a function of when is held constant (i.e., ). Here, E = 2.45, and the other parameters are the same as those in Fig. 2(b) .
Contour map of spin-polarization of transmitted electrons as a function of and for and E = 2.45.
Transmission coefficients and as a function of electron energy for (a) , (b) , (c) , and (d) . Here, and .
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