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Evolution kinetics of nonequilibrium longitudinal-optical phonons generated by drifting electrons in III-nitrides: longitudinal-optical-phonon resonance
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10.1063/1.3462501
/content/aip/journal/jap/108/3/10.1063/1.3462501
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/3/10.1063/1.3462501

Figures

Image of FIG. 1.
FIG. 1.

(a) The electron drift velocity (solid line and left ordinate), the electron quasitemperature (dashed line and right ordinate); (b) the internal energy (dashed line and right ordinate), the kinetic energy of the drift motion (dotted line and right ordinate), and the ratio (solid line and left ordinate).

Image of FIG. 2.
FIG. 2.

The “hot” LO-phonon populations vs wave number for four different values of the electric field and several values of the angle .

Image of FIG. 3.
FIG. 3.

The “hot” LO-phonon populations vs wave number for four different values of the angle and several values of the electric field.

Image of FIG. 4.
FIG. 4.

For the case of a field of 100 kV/cm are shown the “lobes” describing the values of the LO-phonon populations (for the four wave number indicated) corresponding to all possible values of the angle ( parallel to the electric field for and antiparallel for ).

Image of FIG. 5.
FIG. 5.

For the case of wave number , are shown the “lobes” describing the values of the LO-phonon populations (for the three intensities of the electric field indicated) corresponding to all possible values of the angle .

Image of FIG. 6.
FIG. 6.

The LO-phonon populations vs for three different values of , for and .

Image of FIG. 7.
FIG. 7.

The dependence of the LO-phonon population on wave number and angle, for and .

Image of FIG. 8.
FIG. 8.

Dependence on the electric field of the (nonequilibrium) quasitemperatures of the carriers and of three LO-phonon modes [see Eq. (32) and Fig. 1(a)].

Image of FIG. 9.
FIG. 9.

Dependence on wave vector and electric field strength of the quasichemical potential (in units of ) [see Eq. (31)].

Image of FIG. 10.
FIG. 10.

for three values of the electric field, and . changes from positive (a relaxation term) to negative (a pumping term) when goes through a certain value corresponding a ( for ).

Image of FIG. 11.
FIG. 11.

Dependence on wave vector of the LO-phonon quasitemperatures for the III-nitrides: InN, GaN, and AlN.

Tables

Generic image for table
Table I.

Parameters for GaN, AlN and InN.30–32,44–46

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/content/aip/journal/jap/108/3/10.1063/1.3462501
2010-08-12
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Evolution kinetics of nonequilibrium longitudinal-optical phonons generated by drifting electrons in III-nitrides: longitudinal-optical-phonon resonance
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/3/10.1063/1.3462501
10.1063/1.3462501
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