| Issue |
EPL
Volume 98, Number 5, June 2012
|
|
|---|---|---|
| Article Number | 56001 | |
| Number of page(s) | 4 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/98/56001 | |
| Published online | 08 June 2012 | |
Heat transport in multilayer abrupt graphene junctions modulated with convexity-shaped quantum structure
1
Institute of Mathematics and Physics, Central South University of Forestry and Technology Changsha 410004, China
2
Department of Applied Physics, Hunan University - Changsha 410082, China
a
pengxiaofang11@yahoo.com.cn
b
keqiuchen@hnu.edu.cn
Received:
2
March
2012
Accepted:
9
May
2012
By using the force-constant and elastic wave continuum models, we investigate the ballistic phonon transport and thermal conductance in multilayer zigzag graphene nanoribbon junctions modulated with convexity-shaped quantum structures at low temperatures. The results show that the convexity-shaped (T-shaped or H-shaped) quantum structure can enhance thermal conductance at very low temperatures. The enhancement originates from the increased attenuation length of the evanescent modes in convexity-shaped quantum structures. A brief analysis of these results is given.
PACS: 63.22.Rc – Phonons in graphene / 73.22.-f – Electronic structure of nanoscale materials and related systems / 44.10.+i – Heat conduction
© EPLA, 2012
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