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Semiconductor-metal hybrid structures as local magnetic-field probes: Magnetoresistance and spatial sensitivity profile
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10.1063/1.2108122
/content/aip/journal/apl/87/17/10.1063/1.2108122
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/17/10.1063/1.2108122
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic drawing of the semiconductor-metal hybrid structure (top view). The metal (m) is shown in the upper, and the semiconductor (sc) in the lower part of the figure. The current leads are labeled with , and the voltage probes are labeled . The white circle illustrates the magnetic dot used to study the effect of inhomogeneous fields (cf. Figs. 2 and 3 ). In the dot, the magnetic field is constant. Outside the dot in Figs. 2 and 3 . The positive magnetic-field direction is out of the device plane shown here. (b) Relative resistance change vs [see Eq. (1) ] for a homogeneous magnetic field in different voltage probe configurations. Here, the magnetic field is constant over the whole device.

Image of FIG. 2.
FIG. 2.

Magnetoresistance [see Eq. (2) ] of the hybrid structure for different voltage probe configurations: (a) , (b) , and (c) as a function of the dot’s position in the semiconductor. For clarity, the metal is not shown here. In each figure, black represents the lowest and white the highest possible value. Note that the dynamic range in each subfigure is the same.

Image of FIG. 3.
FIG. 3.

Relative resistance change [see Eq. (3) ] vs magnetic field within the dot for dot positions at , four specific positions, and different voltage probe configurations: (a) , (b) , and (c) . In (a) and (b), the curves for and coincide. Outside the dot the magnetic field is zero.

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/content/aip/journal/apl/87/17/10.1063/1.2108122
2005-10-17
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Semiconductor-metal hybrid structures as local magnetic-field probes: Magnetoresistance and spatial sensitivity profile
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/17/10.1063/1.2108122
10.1063/1.2108122
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