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Magnetic-field asymmetry of nonlinear transport in narrow channels with asymmetric hybrid confinement
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10.1063/1.3204462
/content/aip/journal/apl/95/6/10.1063/1.3204462
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/6/10.1063/1.3204462
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Electron microscope image of the studied asymmetric constriction. One can see on the left side the metal-surface depletion gate and on the right side the etched side gate. These two gates define the dimension of the quantum wire. (b) Schematic picture of the electron motion by different applied magnetic fields. One can see the magnetic deflection of the electrons toward the constriction depending on the magnetic field direction.

Image of FIG. 2.
FIG. 2.

Conductance vs top-gate voltage . For , the channel in the hybrid constriction is defined and differs significantly when the magnetic field direction is changed.

Image of FIG. 3.
FIG. 3.

(a) as a function of the probe-voltage for different magnetic fields is compared with the asymmetric conductance reference from D. Hartmann et al. (Ref. 11). One can see a higher value of the asymmetric conductance with asymmetric side walls than symmetric side walls. (b) The maximum of the asymmetric conductance vs increases linear and saturates for . (c) Probe-voltage vs magnetic field strength. The asymmetry is the dominating magnetic field effect for small .

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/content/aip/journal/apl/95/6/10.1063/1.3204462
2009-08-12
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetic-field asymmetry of nonlinear transport in narrow channels with asymmetric hybrid confinement
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/6/10.1063/1.3204462
10.1063/1.3204462
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