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Spin transport properties of polygonal quantum ring with Rashba spin-orbit coupling
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10.1063/1.4813231
/content/aip/journal/jap/114/2/10.1063/1.4813231
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/2/10.1063/1.4813231
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

A 1D polygonal quantum ring coupled to one input and output terminal. Vertices are connected by single-channel ballistic quantum wires with Rashba SOC. Upper arm are the segments from node 0 to node ; lower arm are the segments from node  + 1 to node .

Image of FIG. 2.
FIG. 2.

Spin transport properties of a regular hexagon quantum ring for coupled to external leads in symmetric ( = 3) and asymmetric ( = 2) systems. Because the conductance is periodic, only one period is shown here. We use as the unit of conductance.

Image of FIG. 3.
FIG. 3.

Input electrons have . The output channels are and . (a) Transmission probability for the symmetric hexagon quantum ring ( = 3) for nonzero Rashba SOC . (b) Transmission probability for nonzero Rashba SOC for the asymmetric hexagon quantum ring ( = 2). (c) Transmission probability for nonzero Rashba SOC for a symmetric hexagon quantum ring ( = 3).

Image of FIG. 4.
FIG. 4.

For a symmetric hexagonal quantum ring ( = 3), (a) transmission probability as a function of the strength of the Rashba SOC, (b) transmission probability for nonzero Rashba SOC from channel into channel .

Image of FIG. 5.
FIG. 5.

For a symmetric hexagonal quantum ring ( = 3), input electrons are unpolarized. (a) The efficiency of the spin splitter as a function of the strength of the Rashba SOC. (b) Transmission probability as the function of the strength of the Rashba SOC.

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/content/aip/journal/jap/114/2/10.1063/1.4813231
2013-07-09
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spin transport properties of polygonal quantum ring with Rashba spin-orbit coupling
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/2/10.1063/1.4813231
10.1063/1.4813231
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