Skip to main content
eScholarship
Open Access Publications from the University of California

UC Davis

UC Davis Previously Published Works bannerUC Davis

Length-dependent thermal conductivity in suspended single-layer graphene.

  • Author(s): Xu, Xiangfan
  • Pereira, Luiz FC
  • Wang, Yu
  • Wu, Jing
  • Zhang, Kaiwen
  • Zhao, Xiangming
  • Bae, Sukang
  • Tinh Bui, Cong
  • Xie, Rongguo
  • Thong, John TL
  • Hong, Byung Hee
  • Loh, Kian Ping
  • Donadio, Davide
  • Li, Baowen
  • Özyilmaz, Barbaros
  • et al.

Published Web Location

https://www.nature.com/articles/ncomms4689.pdf
No data is associated with this publication.
Abstract

Graphene exhibits extraordinary electronic and mechanical properties, and extremely high thermal conductivity. Being a very stable atomically thick membrane that can be suspended between two leads, graphene provides a perfect test platform for studying thermal conductivity in two-dimensional systems, which is of primary importance for phonon transport in low-dimensional materials. Here we report experimental measurements and non-equilibrium molecular dynamics simulations of thermal conduction in suspended single-layer graphene as a function of both temperature and sample length. Interestingly and in contrast to bulk materials, at 300 K, thermal conductivity keeps increasing and remains logarithmically divergent with sample length even for sample lengths much larger than the average phonon mean free path. This result is a consequence of the two-dimensional nature of phonons in graphene, and provides fundamental understanding of thermal transport in two-dimensional materials.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Item not freely available? Link broken?
Report a problem accessing this item