期刊
PHYSICAL REVIEW E
卷 78, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.78.061136
关键词
Anderson model; anharmonic lattice modes; boron compounds; carbon nanotubes; heat conduction; III-V semiconductors; metal-insulator transition; thermal conductivity
资金
- MEXT [19740232]
- Grants-in-Aid for Scientific Research [19740232] Funding Source: KAKEN
We address the question of the effect of disorder on heat conduction in an anharmonic chain with interactions given by the Fermi-Pasta-Ulam (FPU) potential. In contrast to the conclusions of an earlier paper [Phys. Rev. Lett. 86, 63 (2001)], which found that disorder could induce a finite thermal conductivity at low temperatures, we find no evidence of a finite-temperature transition in conducting properties. Instead, we find that at low temperatures, small system-size transport properties are dominated by disorder but the asymptotic system size dependence of current is given by the usual FPU result J similar to 1/N-2/3. We also present interesting results on the binary-mass ordered FPU chain.
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