夏明岗
- 教授
- Supervisor of Doctorate Candidates
- Supervisor of Master's Candidates
- E-Mail:
- Date of Employment:2002-04-09
- Education Level:With Certificate of Graduation for Doctorate Study
- Professional Title:教授
- Status:Employed
- Alma Mater:西安交通大学
- College:School of Physics
- Discipline:Physics
- Papers
Specific heat of graphene nanoribbons
Release Time:2025-04-30 Hits:
- Date:2025-04-30
- Title of Paper:Specific heat of graphene nanoribbons
- Journal:Phys. Lett. A
- Summary:We studied the specific heat of graphene nanoribbons (GNRs) using an extended force constant model. We found that at low temperature, the specific heat decreases, and its variation with temperature increases with increasing GNR width. However, the specific heat increases with increasing GNR width after crossing a chaotic region. Free boundary conditions, -CHOH-terminated and armchair-edge-induced phonon nondegeneracy, shift and distortion and localized vibrational modes significantly influence GNR specific heat compared with periodic boundary conditions and bare and zigzag edges in GNRs. Finally, we found a uniform expression for specific heat vs. width at every temperature except for the chaotic region.
- Co-author:M. G. Xia*, Y. Song, S. L. Zhang
- Volume:375
- Page Number:3726
- Translation or Not:No
- Date of Publication:2011-10-03