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Screening effect on the binding energy of the exciton in quantum wires
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10.1063/1.4743005
/content/aip/journal/jap/112/3/10.1063/1.4743005
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/3/10.1063/1.4743005
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The exciton binding energy versus the QWR width for different screen lengths. The symbols ▪ and □ show the calculated binding energies for a pure exciton system in Refs. 1 and 22, respectively.

Image of FIG. 2.
FIG. 2.

The exciton binding energies as a function of the screen length for different values of QWR widths.

Image of FIG. 3.
FIG. 3.

The exciton binding energies as a function of carrier density for different values of QWR widths.

Image of FIG. 4.
FIG. 4.

(a) The exciton binding energies as functions of QWR widths for carrier densities and . (b) The relative decrease of the exciton binding energy versus the QWR width.

Image of FIG. 5.
FIG. 5.

Contour plot depicting the exciton binding energy phase diagram of a QWR with on the nT plane for a range of conditions ranging form a coexistence of excitons and free carriers to an eh plasma state. Each contour line represents a value for the binding energy (in units of meV) of the exciton in QWR.

Image of FIG. 6.
FIG. 6.

The critical carrier density as a function of QWR width. Here, corresponds to the critical carrier density above which no excitons can be formed.

Image of FIG. 7.
FIG. 7.

The average distance between the electron and hole as a function of the screen parameter 1/S for different QWRs widths. Zero points of exciton binding energies are located by the symbol • in the corresponding curves.

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/content/aip/journal/jap/112/3/10.1063/1.4743005
2012-08-06
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Screening effect on the binding energy of the exciton in quantum wires
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/3/10.1063/1.4743005
10.1063/1.4743005
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