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Observation of longitudinal-optic-phonon-plasmon-coupled mode in n-type AlGaN alloy films
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10.1063/1.3670338
/content/aip/journal/apl/99/25/10.1063/1.3670338
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/25/10.1063/1.3670338

Figures

Image of FIG. 1.
FIG. 1.

Observed Raman spectra of Al x Ga1− x N samples. Asterisks and diamond denote signals due to sapphire substrate and a disorder mode, respectively. Carrier density n deduced from Hall measurement is shown for each sample.

Image of FIG. 2.
FIG. 2.

Detailed Raman spectra for the LO-phonon region. Arrows denote LO (or LOPC) peak of Al x Ga1− x N layer. Dashed curves show best-fit profiles to the LO (or LOPC) peak.

Image of FIG. 3.
FIG. 3.

L+-mode frequency vs. carrier density in Al x Ga1− x N for x = 0.67 calculated with m */m 0 = 0.28, Γ = 12 cm−1, and different values of γ. The inset shows L+ and L mode behavior for γ = Γ = 0.

Tables

Generic image for table
Table I.

List of Al x Ga1− x N samples showing Al molar fraction x, carrier density n, and mobility μ. Sample #A is undoped.

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/content/aip/journal/apl/99/25/10.1063/1.3670338
2011-12-20
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Observation of longitudinal-optic-phonon-plasmon-coupled mode in n-type AlGaN alloy films
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/25/10.1063/1.3670338
10.1063/1.3670338
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