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Spin-dependent transport and spin-switching effect in graphene with magnetoelectric modulations
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10.1063/1.3553881
/content/aip/journal/jap/109/5/10.1063/1.3553881
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/5/10.1063/1.3553881
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic representation of the magnetic step. The solid arrows and dashed lines correspond to the delta-function like magnetic field and its vector potential, respectively. (b) Propagations of Dirac fermions in different regions of the magnetic step structure. The width of the middle region is .

Image of FIG. 2.
FIG. 2.

Plots of transmission probability through the magnetic step for up-spin as functions of (a) fermion energy and (b) incident angle. The typical energy scale in use is , and .

Image of FIG. 3.
FIG. 3.

(Color online) Conductance as a function of fermion energy for different spins. Each line corresponds to different spins. is the unit of conductance. (Inset: magnification of the conductance near the threshold energy)

Image of FIG. 4.
FIG. 4.

Spin polarization of the conductance through the magnetic step.

Image of FIG. 5.
FIG. 5.

Plots of the transmission probability through the magnetic step modulated by the electrostaic delta potential as functions of (a) fermion energy and (b) incident angle. This delta potential is located at , and it strength is used.

Image of FIG. 6.
FIG. 6.

(Color online) Effect of the electric modulation on the spin transport through the magnetic step. The spin polarization for the magnetic step is dramatically changed by the delta potential, .

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/content/aip/journal/jap/109/5/10.1063/1.3553881
2011-03-14
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spin-dependent transport and spin-switching effect in graphene with magnetoelectric modulations
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/5/10.1063/1.3553881
10.1063/1.3553881
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