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The impact of quantum dots magnetization on spin separation and spin current in a multiple quantum-dot ring in the presence of Rashba spin-orbit coupling
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10.1063/1.4729912
/content/aip/journal/jap/111/12/10.1063/1.4729912
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/12/10.1063/1.4729912
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic plot of a triple-quantum-dot ring system subjected to local Rashba interaction on QD-2 and local magnetic moments on QD-1 and QD-3.

Image of FIG. 2.
FIG. 2.

(a) and (b) indicate spin dependent transmission probability in theoutgoing leads 1 and 3 versus , respectively. (c) and (d) show and as a function of , respectively. Thick-lines refer to the case and thin-lines are related to The solid-lines (dotted-lines) refer to up (down) spin.

Image of FIG. 3.
FIG. 3.

Spin-polarization of electrons transmitting (a), (c), (e) lead-1 and (b), (d), (f) lead-3 as a function of RSOI coefficient. Energy of incoming electrons is assumed to be zero, and QD-1 and QD-3 are (a) and (b) non-magnetic, (c) and (d) antiferromagnetic, and (e) and (f) ferromagnetic.

Image of FIG. 4.
FIG. 4.

Contour map of spin-polarization (a), (c), (e) lead-1 and (b), (d), (f) lead-3 versus magnetic flux and RSOI coefficient. Energy of incoming electrons is assumed to be zero, and QD-1 and QD-3 are (a) and (b) non-magnetic, (c) and (d) antiferromagnetic, and (e) and (f) ferromagnetic.

Image of FIG. 5.
FIG. 5.

Spin current in lead-1 versus RSOI coefficient. Magnetic flux is assumed to be zero, and lead-3 has been disconnected from the system.

Image of FIG. 6.
FIG. 6.

The contour map of spin current in the lead-1 versus RSOI coefficient and magnetic flux in the case that lead-3 has been removed for (a) and (b) .

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/content/aip/journal/jap/111/12/10.1063/1.4729912
2012-06-22
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The impact of quantum dots magnetization on spin separation and spin current in a multiple quantum-dot ring in the presence of Rashba spin-orbit coupling
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/12/10.1063/1.4729912
10.1063/1.4729912
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