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Direct probe of the built-in electric field of Mg-doped -plane wurtzite InN surfaces with time-resolved electric-field-induced second harmonic generation
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10.1063/1.2979238
/content/aip/journal/apl/93/13/10.1063/1.2979238
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/13/10.1063/1.2979238

Figures

Image of FIG. 1.
FIG. 1.

Reflective SHG (blue solid squares) measured as a function of the azimuthal angle under four configurations: (a) , (b) , (c) , and (d) . The theoretical calculation curves (red solid lines) show reasonable match with the experimental results. Note that all the curves were normalized for comparison.

Image of FIG. 2.
FIG. 2.

Pump power dependent TR-EFISH curves (with offset for clarity). The pump-induced photoexcited carrier density was estimated to be (from the top to the bottom) , , , , , , and , respectively. The inset plots the TR-EFISH minimum position as the function of . The saturation behavior becomes obvious at higher .

Image of FIG. 3.
FIG. 3.

TR-EFISH curves of five undoped and Mg-doped samples, whose carrier concentrations were determined to be (A) : , (B) : , (C) : , (D) : , and (E) : , respectively. The photoexcited carrier density was set to to fully screen the field. The inset plots the saturation time as the function of the .

Image of FIG. 4.
FIG. 4.

The band bending and carrier distribution of (a) -type and (b) -type are illustrated, where , , IL, , and denote the bulk Fermi level, surface branch point energy, electron inversion layer, free electron, and free hole spatial distributions.

Tables

Generic image for table
Table I.

The nonvanishing and tensor elements under some particular SHG configurations.

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/content/aip/journal/apl/93/13/10.1063/1.2979238
2008-10-02
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Direct probe of the built-in electric field of Mg-doped a-plane wurtzite InN surfaces with time-resolved electric-field-induced second harmonic generation
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/13/10.1063/1.2979238
10.1063/1.2979238
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