论文标题
碳纳米结构中的PEIERLS型金属绝缘体过渡
Peierls-type metal-insulator transition in carbon nanostructures
论文作者
论文摘要
我们报告了ZSM-5沸石孔网络内化学蒸气沉积形成的碳纳米结构中PEIERLS型金属绝缘体过渡的观察。该纳米碳@ZSM-5的拉曼光谱表明（3,0）碳纳米管的径向呼吸模式（RBM）的明确签名，该模式可以构成碳网络段。在多个少数微米尺寸的纳米碳上进行电运测量@zsm-5晶体显示出抗性依赖性的金属温度降低至30 K，此时，电阻表现出急剧的上流，伴随着差异的抗抗性水平，伴随着差异的抗性测量值。进一步的大厅测量结果既产生了电荷载体的符号及其密度。后者与准数据数据表现出极好的一致性。我们采用了第一原理计算来验证（3,0）碳纳米管中的声子模式确实可以软化。
We report the observation of Peierls-type metal-insulator transition in carbon nanostructures formed by chemical vapor deposition inside the pore network of the ZSM-5 zeolite. The Raman spectrum of this nanocarbon@ZSM-5 indicates a clear signature of the radial breathing mode (RBM) for (3,0) carbon nanotubes that can constitute the carbon network segments. Electrical transport measurements on multiple few-micron-sized nanocarbon@ZSM-5 crystals showed metallic temperature of resistance dependence down to 30 K, at which point the resistance exhibited a sharp upturn that is accompanied by the opening of a quasigap at the Fermi level as indicated by the differential resistance measurements. Further Hall measurements have yielded both the sign of the charge carrier and its density. The latter demonstrated excellent consistency with the quasigap data. We employed first-principles calculations to verify that there can indeed be softening of the phonon modes in the (3,0) carbon nanotubes.
