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How reliable are Hanle measurements in metals in a three-terminal geometry?
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10.1063/1.4806987
/content/aip/journal/apl/102/19/10.1063/1.4806987
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/19/10.1063/1.4806987
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Figures

Image of FIG. 1.
FIG. 1.

(a) Scheme and dimensions of the device used for the Hanle measurements. The electrical configuration and the magnetic field direction for both Hanle ( ) and inverted Hanle ( ) effect are shown. The magnetization vector of Py strip (), parallel to its easy axis, is also shown. (b) I-V data for sample 1 (open circles) and sample 2 (solid triangles), measured at 10 K. Red solid lines are best fits to the standard Simmons model. (c) Zero bias resistance of the tunnel junction, multiplied by its area , as a function of temperature for sample 1 (open circles) and sample 2 (solid triangles).

Image of FIG. 2.
FIG. 2.

(a) Hanle and inverted Hanle-like curves (solid and open circles, respectively) for sample 1, measured at 10 K and −100 A. Red solid line is the Lorentzian fit of the data to Eq. (1) . Hanle (), inverted Hanle () and total Hanle () signals are defined. (b) Same as (a) for sample 2, measured at 10 K and −5 A. The device scheme is shown as an inset.

Image of FIG. 3.
FIG. 3.

(a) Total Hanle signal as a function of temperature, measured at −100 A for sample 1 (open circles) and at −5 A for sample 2 (solid triangles). Red solid lines are fits of the data to Eq. (2) . (b) Total Hanle signal as a function of the applied bias at 10 K, for sample 1 (open circles) and sample 2 (solid triangles).

Image of FIG. 4.
FIG. 4.

Hanle and inverted Hanle-like curves (solid and open circles, respectively) measured in sample 5 at 10 K and −50 A. Red solid line is the Lorentzian fit of the data to Eq. (1) . The device scheme is shown as an inset.

Image of FIG. 5.
FIG. 5.

· as a function of the product of the tunnel junction, for different samples measured at 10 K and their optimum bias conditions. Solid and open symbols are for Al and Au samples, respectively. Red line is the logarithmic fit to the data.

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/content/aip/journal/apl/102/19/10.1063/1.4806987
2013-05-13
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: How reliable are Hanle measurements in metals in a three-terminal geometry?
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/19/10.1063/1.4806987
10.1063/1.4806987
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