Electronic transport properties of NbC(C)-C nanocomposites
文献类型：期刊论文
| 作者 | D. Li ; W. F. Li ; S. Ma ; Z. D. Zhang |
| 刊名 | Physical Review B
 |
| 出版日期 | 2006 |
| 卷号 | 73期号:19 |
| 关键词 | zero-dimensional superconductor granular metal-films particles conduction nanocapsules percolation samples |
| ISSN号 | 1098-0121 |
| 中文摘要 | We report the electronic transport properties of a composite system comprising zero dimensional superconducting NbC(C) nanocapsules and carbon nanofiber matrix. DC susceptibility measurements of the nanocomposite indicate that the critical temperature (T-C) of NbC nanocrystals is 10.7 K. The temperature dependence of electrical resistivity of the specimen pellet follows the Mott's T-1/4 law in a temperature range between T-C of NbC and 300 K, owing to a strong degree of structural disorder in the carbon matrix. Below the T-C of NbC, when the change of its electrostatic energy Delta E is far greater than the thermal energy, an electron will be localized on an isolated NbC nanocrystal at very low temperatures, leading to "Coulomb Blockade." As a result, a collective behavior of the single-electron tunneling effect takes place in a three-dimensional granular superconductors' network composed of the NbC/carbon/NbC tunneling junctions. The superconducting gap of NbC crystals is not found in the current-voltage curves, due to the suppression of surface superconductivity through the contact between NbC and carbon shells. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34294]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | D. Li,W. F. Li,S. Ma,et al. Electronic transport properties of NbC(C)-C nanocomposites[J]. Physical Review B,2006,73(19). |
| APA | D. Li,W. F. Li,S. Ma,&Z. D. Zhang.(2006).Electronic transport properties of NbC(C)-C nanocomposites.Physical Review B,73(19). |
| MLA | D. Li,et al."Electronic transport properties of NbC(C)-C nanocomposites".Physical Review B 73.19(2006). |
入库方式： OAI收割
来源：金属研究所
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