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Plasma wave resonant detection of terahertz radiations by nanometric transistors
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10.1063/1.2719970
/content/aip/journal/ltp/33/2/10.1063/1.2719970
http://aip.metastore.ingenta.com/content/aip/journal/ltp/33/2/10.1063/1.2719970
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Photoresponse of device versus gate voltage at different device temperatures at . For the sake of clarity the curves are shifted along the vertical scale.

Image of FIG. 2.
FIG. 2.

Photoresponse in -based device versus the gate voltage at three different frequencies of excitation (1.8, 2.5, and ) at (right axis). Curves are shifted along the vertical scale. Dashed lines indicate zero photoresponse at the corresponding frequency. Arrows indicate resonance positions. The calculated plasmon frequency as a function of the gate voltage for (threshold voltage) is shown by the dot-and-dash line (left axis). The error bars correspond to the linewidths of the experimental resonance peaks. (After Ref. 12).

Image of FIG. 3.
FIG. 3.

Photoresponse in -based device versus the gate voltage at two different frequencies of excitation ( and ) at (left axis). Curves are shifted in the vertical scale. Solid lines indicate zero photoresponse at corresponding frequency. Arrows indicate resonance positions. Drain current versus the gate voltage at (right axis). (threshold voltage).

Image of FIG. 4.
FIG. 4.

Photoconductive response versus gate voltage for different values of applied drain—source voltage from up to : , , at a fixed value of the external frequency of . For a typical nonresonant signal is observed. For higher values the resonant peak starts to grow and shifts to higher values of the gate voltage.

Image of FIG. 5.
FIG. 5.

Photo-induced drain–source voltage as a function of gate bias for different external frequencies [GHz]: 679 , 473 at a fixed value of applied drain–source voltage of . At the lower frequency, the response is nonresonant. The resonance appears for the higher frequency .

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/content/aip/journal/ltp/33/2/10.1063/1.2719970
2007-02-01
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Plasma wave resonant detection of terahertz radiations by nanometric transistors
http://aip.metastore.ingenta.com/content/aip/journal/ltp/33/2/10.1063/1.2719970
10.1063/1.2719970
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