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Single-valley high-mobility (110) AlAs quantum wells with anisotropic mass
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10.1063/1.2991448
/content/aip/journal/apl/93/13/10.1063/1.2991448
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/13/10.1063/1.2991448
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Energy band structure of the triple delta-doped (110) AlAs QW. The vertical axis denotes the energy scale, the Si-delta doping layers in the AlGaAs layers, the solid line shows the band, and the dashed line shows the band. The structure is the same as described in Ref. 4 on a different facet. (Inset) Electron occupation in a (110)-oriented QW, in momentum space. The -axis denotes the growth axis, and the single-valley case is shown as shaded ellipsoid (double-valley unshaded).

Image of FIG. 2.
FIG. 2.

(Bottom) and traces at in the dark (dashed) and postillumination (solid) for sample J in van der Pauw configuration. In the dark, and and postillumination, and . (Top) Postillumination longitudinal resistance for sample L at low magnetic fields. Odd periodicity, of prominent minima, is one indication of single-valley occupancy. Ladder diagram inset shows Landau level splitting and Zeeman splitting for bare . The prominence of odd integer gaps suggests with interactions.

Image of FIG. 3.
FIG. 3.

The density of 2DES in a (110)-oriented AlAs QW as a function of the Si -doping . The top -axis defines the time of Si doping corresponding to the doping densities. The vertical dashed line shows the saturation threshold for both the dark and the postillumination (red LED ∇) conditions. The solid lines are plotted as an aid to locating the saturation threshold.

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/content/aip/journal/apl/93/13/10.1063/1.2991448
2008-09-29
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Single-valley high-mobility (110) AlAs quantum wells with anisotropic mass
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/13/10.1063/1.2991448
10.1063/1.2991448
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