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arXiv:2209.09694 (cond-mat)
[Submitted on 20 Sep 2022 (v1), last revised 5 Apr 2023 (this version, v3)]

Title:Modulating Thermal Conductivity via Targeted Phonon Excitation

Authors:Xiao Wan, Dongkai Pan, Jing-Tao Lü, Sebastian Volz, Lifa Zhang, Qing Hao, Yangjun Qin, Zhicheng Zong, Nuo Yang
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Abstract:Thermal conductivity is a critical material property in numerous applications, such as those related to thermoelectric devices and heat dissipation. Effectively modulating thermal conductivity has become a great concern in the field of heat conduction. In this study, a quantum strategy is proposed to modulate thermal conductivity by exciting targeted phonons. The results show that the thermal conductivity of graphene can be tailored in the range of 1559 W/m-K (49%) to 4093 W/m-K (128%), compared with the intrinsic value of 3189 W/m-K. A similar trend is also observed for graphene nanoribbons. The results are obtained through both ab initio calculations and molecular dynamics simulations. This brand-new quantum strategy to modulate thermal conductivity paves a way for quantum heat conduction.
Subjects: Materials Science (cond-mat.mtrl-sci)
Cite as: arXiv:2209.09694 [cond-mat.mtrl-sci]
  (or arXiv:2209.09694v3 [cond-mat.mtrl-sci] for this version)
  https://doi.org/10.48550/arXiv.2209.09694

Submission history

From: Xiao Wan [view email]
[v1] Tue, 20 Sep 2022 13:00:53 UTC (599 KB)
[v2] Fri, 13 Jan 2023 10:59:50 UTC (1,076 KB)
[v3] Wed, 5 Apr 2023 04:13:59 UTC (636 KB)
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