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Direct correlation of negative magnetoresistance with concentrations of localized holes in Be delta-doped GaAs structures
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10.1116/1.2359733
/content/avs/journal/jvstb/24/6/10.1116/1.2359733
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/24/6/10.1116/1.2359733

Figures

Image of FIG. 1.
FIG. 1.

Layer configuration of the pair delta-doped structure and energy diagram. The thicknesses of layers are indicated in parentheses. In the energy diagram and are the Fermi level and mobility edge, respectively, and is the density of states.

Image of FIG. 2.
FIG. 2.

Temperature dependence of resistivity of six samples and the Arrhenius plots of sample 3.

Image of FIG. 3.
FIG. 3.

Temperature dependence of magnetoresistance of six samples, where with .

Image of FIG. 4.
FIG. 4.

Magnetic field dependence of resistance of samples 2, 3, and 5 at three different temperatures.

Image of FIG. 5.
FIG. 5.

Plots of the ratio of coefficients of samples 3 and 5 against . Each value of is the average obtained from four independent measurements of magnetoresistance curves.

Tables

Generic image for table
TABLE I.

Be and Si concentrations, room temperature free hole concentration and mobility , localized hole concentration , and energy difference .

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/content/avs/journal/jvstb/24/6/10.1116/1.2359733
2006-10-31
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Direct correlation of negative magnetoresistance with concentrations of localized holes in Be delta-doped GaAs structures
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/24/6/10.1116/1.2359733
10.1116/1.2359733
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