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Lattice dynamics investigations of phonon thermal conductivity of superlattices with rough interfaces
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10.1063/1.2384810
/content/aip/journal/jap/100/10/10.1063/1.2384810
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/10/10.1063/1.2384810

Figures

Image of FIG. 1.
FIG. 1.

The squared component of the group velocity weighted by the phonon density of states: (a) (growth) direction and (b) (in-plane) direction for SLs , , and . Corresponding quantities of bulk Si and Ge are also shown for comparison.

Image of FIG. 2.
FIG. 2.

Heat conductivities [defined by Eq. (5)] in (a) and (b) directions of various SLs and alloys at room temperature .

Image of FIG. 3.
FIG. 3.

Configurations of four interfaces for SL Rough (1), where solid circles are Ge atoms and hollow squares are Si atoms. The SL is calculated with a conventional unit cell, that is, . These interface configurations are generated by random numbers.

Tables

Generic image for table
Table I.

Numerical data used in calculations and calculated results for various SLs and alloys. The unit of velocity is , the unit of conductivity is .

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/content/aip/journal/jap/100/10/10.1063/1.2384810
2006-11-16
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Lattice dynamics investigations of phonon thermal conductivity of Si∕Ge superlattices with rough interfaces
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/10/10.1063/1.2384810
10.1063/1.2384810
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