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Spin transport properties in a double quantum ring with Rashba spin-orbit interaction
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10.1063/1.4772512
/content/aip/journal/jap/113/1/10.1063/1.4772512
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/1/10.1063/1.4772512
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

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.

Image of FIG. 2.
FIG. 2.

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 .

Image of FIG. 3.
FIG. 3.

(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) .

Image of FIG. 4.
FIG. 4.

Contour map of spin-polarization of transmitted electrons as a function of and for and E = 2.45.

Image of FIG. 5.
FIG. 5.

Transmission coefficients and as a function of electron energy for (a) , (b) , (c) , and (d) . Here, and .

Image of FIG. 6.
FIG. 6.

(a) Transmission coefficients and as a function of normalized magnetic flux for E = 2.45. (b) Electron spin-polarization corresponding to Fig. 6(a) . Other parameters are the same as those in Fig. 2(b) .

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/content/aip/journal/jap/113/1/10.1063/1.4772512
2013-01-03
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spin transport properties in a double quantum ring with Rashba spin-orbit interaction
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/1/10.1063/1.4772512
10.1063/1.4772512
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