Electronic specific heat of nanographite ribbons

C. W. Chiu, M. F. Lin, F. L. Shyu

研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)

摘要

The electronic specific heat of nanographite ribbons exhibits rich temperature dependence, mainly owing to the special band structures. The thermal property strongly depends on the geometric structures, the edge structure and the width. There is a simple relation between the ribbon width and the electronic specific heat for the metallic or semiconducting armchair ribbons. However, it is absent for the zigzag ribbons. The metallic armchair ribbons exhibit linear temperature dependence. The semiconducting armchair ribbons exhibit composite behavior of power and exponential functions. As for the zigzag ribbons, the temperature dependence of the specific heat is proportional to T1-p. The value of p quickly increases from 1/2 to 1 as the ribbon width gradually grows. The zigzag ribbons might be the first system which exhibits the novel temperature dependence. The nanographite ribbons differ from an infinite graphite sheet, which illustrates that the finite-size effects are significant.

原文English
頁(從 - 到)356-361
頁數6
期刊Physica E: Low-Dimensional Systems and Nanostructures
11
發行號4
DOIs
出版狀態Published - 2001 十一月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 原子與分子物理與光學
  • 凝聚態物理學

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