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Zeeman splitting in ballistic split-gate quantum point contacts
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10.1063/1.2715106
/content/aip/journal/apl/90/12/10.1063/1.2715106
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/12/10.1063/1.2715106
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Differential conductance in units of as a function of gate voltage at various magnetic fields for . The inset shows a schematic cross section of the split-gate point contact.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Differential conductance at as a function of gate voltage at a magnetic field of . (b) Electron beam micrograph of split-gate structures. Only the center point contact, indicated by a dot, was used in the current study. (c) Contour plot of the differential conductance as a function of bias voltage and gate voltage at . The corresponding transconductance is shown as a color scale plot; the light yellow regions correspond to low transconductance regions (conductance plateaus) and the blue regions correspond to high transconductance regions. (d) Differential conductance as a function of at the center of the first (1) and second (2) plateaus.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Contour plot of the differential conductance at as a function of bias voltage and gate voltage . The corresponding transconductance is shown as a color scale plot (same scale as used in Fig. 2. (b) Corresponding plot for .

Image of FIG. 4.
FIG. 4.

(Color online) Zeeman energy splitting as a function of magnetic field (dots). The full line corresponds to the calculated Zeeman splitting assuming a factor of 4.0. The inset illustrates the energy dispersion of the point contact.

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/content/aip/journal/apl/90/12/10.1063/1.2715106
2007-03-20
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Zeeman splitting in ballistic GaInAs∕InP split-gate quantum point contacts
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/12/10.1063/1.2715106
10.1063/1.2715106
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