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Hot electron transport and impact ionization in the narrow energy gap alloy
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10.1063/1.3306737
/content/aip/journal/apl/96/5/10.1063/1.3306737
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/5/10.1063/1.3306737

Figures

Image of FIG. 1.
FIG. 1.

TEM image of an InAs epilayer grown by MBE on a SI GaAs substrate showing dislocations at the InAs/GaAs interface. Top inset: Optical image of a planar device with a channel of length and width . The arrow indicates the direction of the current, . Bottom inset: curves at and 293 K for a planar device based on InAs.

Image of FIG. 2.
FIG. 2.

curves at for samples with channels of length and width . Dashed lines correspond to bias regions in which the is measured in the pulsed mode. Continuous lines correspond to the measured in the dc mode. Insets: curves for structures with different lengths and width .

Image of FIG. 3.
FIG. 3.

Dependence on and of the critical field for the sharp increase in current in . The lines correspond to the calculated values of using a ballistic and a diffusive model for (dotted lines) and (continuous lines). The inset shows the energy dispersion for the conduction electrons in InAs and . For , we have used a two-level band anticrossing model (Ref. 12).

Tables

Generic image for table
Table I.

Dependence of the electron cyclotron mass , electron Hall mobility and threshold energy for impact ionization on the nitrogen-content, , in the alloy. Values of and are from Ref. 16.

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/content/aip/journal/apl/96/5/10.1063/1.3306737
2010-02-05
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Hot electron transport and impact ionization in the narrow energy gap InAs1−xNx alloy
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/5/10.1063/1.3306737
10.1063/1.3306737
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