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A wide range of energy spin-filtering in a Rashba quantum ring using S-matrix method
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10.1063/1.4789798
/content/aip/journal/jap/113/4/10.1063/1.4789798
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/4/10.1063/1.4789798
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic diagram of a quantum ring with angle between the incoming (left) and the outgoing (right) leads. Also, the amplitude of traveling waves in the leads and ring is shown in this figure.

Image of FIG. 2.
FIG. 2.

(a) Spin-dependent electron transmission coefficients and and (b) spin-polarization of transmitted electrons as a function of the electron energy E for a ring with strongly coupled leads ( ). The normalized magnetic flux, Rashba coefficient, and the angle between the leads are considered to be , , and , respectively.

Image of FIG. 3.
FIG. 3.

Contour map of spin-polarization P as a function of the electron energy E and Rashba coefficient for , and .

Image of FIG. 4.
FIG. 4.

Spin-dependent electron transmission coefficients and as a function of the electron energy for (a) and (b) . Other parameters are the same as those in Fig. 3 .

Image of FIG. 5.
FIG. 5.

Spin-polarization of transmitted electrons as a function of the normalized magnetic flux for electron energy E = 0.5 and different Rashba coefficients and . Here, same as Figs. 3 and 4 , and .

Image of FIG. 6.
FIG. 6.

Contour map of spin-polarization of transmitted electrons as a function of the angle between the leads and the electron energy E for (a) and (b) . Here, and .

Image of FIG. 7.
FIG. 7.

Transmission coefficients and as a function of the electron energy for (a) and (b) when the ring is weakly coupled to the leads. Other parameters are the same as those in Fig. 4 .

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/content/aip/journal/jap/113/4/10.1063/1.4789798
2013-01-31
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A wide range of energy spin-filtering in a Rashba quantum ring using S-matrix method
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/4/10.1063/1.4789798
10.1063/1.4789798
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