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(Color online) Profiles of (solid line), (dashed line) and the corresponding vector potential (dash-dotted line). The inset presents a schematic illustration of the considered device consisting of a laterally confined 2DEG and a FM stripe on top. The magnetization of the FM stripe points along the transport direction of electrons (the axis).
(Color online) Conductances (a) and spin polarizations (b) plotted as functions of the magnetization strength for the two-terminal, FM-stripe modulated, waveguide structure as described in Fig. 1. The Fermi energy is taken as and the width of the waveguide as . The inset in panel (a) shows the total conductance for three cases: the normal case( and , solid line), the but case (dash-dotted line), and the case (dashed line).
(Color online) Conductances (in unit of ), spin polarizations, and spin current plotted as functions of the Fermi energy and the magnetization strength for the same-FM stripe modulated, two-terminal, waveguide structure as in Fig. 2: (a)–(c) spin-dependent conductances, (d) total conductance, (e)–(g) spin polarization components, and (h) spin conductance.
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