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Assessment of microscopic lattice structures in dilute (AlGaIn)NAs laser materials by local mode spectroscopy and numerical simulations
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10.1063/1.2205353
/content/aip/journal/jap/99/12/10.1063/1.2205353
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/12/10.1063/1.2205353

Figures

Image of FIG. 1.
FIG. 1.

Rigid-ion model calculations for the phonon dispersions along high symmetry directions and one-phonon density of states obtained with the parameter values of Table I for AlAs (a), GaAs (b), and InAs (c).

Image of FIG. 2.
FIG. 2.

Schematic representation of zinc-blende GaAs lattice with isolated and defects (a); nearest-neighbor pair (b); complex (c); and complex center (d).

Image of FIG. 3.
FIG. 3.

Green’s function calculations of localized vibrational mode frequencies as a function of force constant change parameter for isolated defects occupying As sites in AlAs (a), GaAs (b), and InAs (c).

Image of FIG. 4.
FIG. 4.

Trends of local mode frequencies of the (acceptors), (isoelectronic), and (acceptors) and (isoelectronic) as a function of lattice constants in Ga pnictides (a). Same key for (acceptors) and (isoelectronic) in Al and In pnictides (b).

Tables

Generic image for table
Table I.

Rigid-ion model force constants and the Szigeti effective charge used for the lattice dynamical (phonon) calculations of GaAs, AlAs, and InAs. The units (in the notations of Kunc et al. (Ref. 27) are N/m for force constants (, , , , , and ; ) and electron charge for ).

Generic image for table
Table II.

Comparison of the calculated localized vibrational modes due to closest mass N (isoelectronic) and C (acceptor) defects occupying As, P, and Sb site in various III–V compound semiconductors.

Generic image for table
Table III.

Comparison of the calculated local modes due to N defects occupying the As-site in different configurations of alloys.

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/content/aip/journal/jap/99/12/10.1063/1.2205353
2006-06-19
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Assessment of microscopic lattice structures in dilute (AlGaIn)NAs laser materials by local mode spectroscopy and numerical simulations
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/12/10.1063/1.2205353
10.1063/1.2205353
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