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Boundary-enhanced momentum relaxation of longitudinal optical phonons in GaN
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10.1063/1.3681373
/content/aip/journal/apl/100/5/10.1063/1.3681373
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/5/10.1063/1.3681373

Figures

Image of FIG. 1.
FIG. 1.

(Color online) characteristics of channels with different dimensions (group B: < 5 μm; group A: > 18 μm). The inset shows the estimated in these channels.

Image of FIG. 2.
FIG. 2.

(Color online) Energy and momentum relaxation times as functions of the electric fields.

Image of FIG. 3.
FIG. 3.

(Color online) Steady-state phonon occupancy (black symbols) in the momentum space as well as the corresponding energy (red symbols) and momentum (blue symbols) relaxation rates as functions of the wavevectors at different electron temperature with of 2 ps. All these curves are normalized by the equilibrium-state values.

Image of FIG. 4.
FIG. 4.

(Color online) Calculated curves of energy loss rates in comparison with the experimental results (symbols) in groups A and B.

Tables

Generic image for table
Table I.

Dimensions of the GaN channels measured by optical microscope.

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/content/aip/journal/apl/100/5/10.1063/1.3681373
2012-02-01
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Boundary-enhanced momentum relaxation of longitudinal optical phonons in GaN
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/5/10.1063/1.3681373
10.1063/1.3681373
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