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Observation of spin dependent photocoductivity in InSb quantum well nanowires
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10.1063/1.4760223
/content/aip/journal/apl/101/15/10.1063/1.4760223
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/15/10.1063/1.4760223
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Figures

Image of FIG. 1.
FIG. 1.

(a) SEM image of patterned Hall bar structure with wire width of 500 nm showing contact designation, (b) and as a function of B for macroscopic InSb QW Hall bar ( wire width), (c) inset: differential for macroscopic Hall bar as a function of 1/B showing clear beating and main panel: FFT of signal suggesting two spin-split sub-bands of the main peak ( and ) corresponding to a Rashba coefficient .

Image of FIG. 2.
FIG. 2.

and of the nanoscale Hall bar device measured using laser. Comparison of and at 10 K (a) and temperature dependence of (b) and (c). The two minima in the at in photoresponse corresponding to are indicated by dashed lines. Additional guides for the eye are included which indicate minima (blue dotted) and peaks (red dashed) in at and .

Image of FIG. 3.
FIG. 3.

An illustration showing the sign change of the spins as a function of B field with the electron momentum in the y direction. (a) When B = 0, there is finite projection of S along when , (b) the spin projection is increased, and (c) with sufficient negative B field, can reverse sign.

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/content/aip/journal/apl/101/15/10.1063/1.4760223
2012-10-12
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Observation of spin dependent photocoductivity in InSb quantum well nanowires
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/15/10.1063/1.4760223
10.1063/1.4760223
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