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Ballistic thermal conductance in a three-dimensional quantum wire modulated with stub structure
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10.1063/1.2737363
/content/aip/journal/apl/90/19/10.1063/1.2737363
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/19/10.1063/1.2737363
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Structure of a nanowire wire with a stub.

Image of FIG. 2.
FIG. 2.

Thermal conductance divided by temperature , which is reduced by the zero-temperature universal value , as a function of the reduced temperature for different structural parameters and boundary conditions. (a1) and (b1) describe the total thermal conductance for different stub lengths : (a1) and (b1) correspond to stress-free and hard wall boundary conditions, respectively. Solid, dashed, and dotted curves correspond to , 15, and , respectively. Here, we take , , and . (a2) and (b2) describe the total thermal conductance for different thicknesses: (a2) and (b2) correspond to stress-free and hard wall boundary conditions, respectively. Solid, dashed, and dotted curves correspond to , respectively, and the dash-dotted curve was calculated by the 2D model. Here, we take , , and . (a3) and (b3) describe the total thermal conductance for different thicknesses but with fixed : (a3) and (b3) correspond to stress-free and hard wall boundary conditions, respectively. Solid, dashed, and dotted curves correspond to , 7.5, and , respectively. Here, we take , , , and . Note that in the calculations only 16 acoustic phonon modes [namely (0,0)–(0,3), (1,0)–(1,3), (2,0)–(2,3), and (3,0)–(3,3) modes] can make their contributions to the thermal conductance for the explored temperature range.

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/content/aip/journal/apl/90/19/10.1063/1.2737363
2007-05-08
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ballistic thermal conductance in a three-dimensional quantum wire modulated with stub structure
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/19/10.1063/1.2737363
10.1063/1.2737363
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