QUANTUM-PERCOLATION MODEL OF ELECTRONIC TRANSPORT IN 2-DIMENSIONAL GRANULAR METAL-FILMS
文献类型：期刊论文
| 作者 | ZHANG, ZQ ; SHENG, P |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 1991 |
| 卷号 | 44期号:7页码:3304 |
| 关键词 | UNIVERSAL CONDUCTANCE FLUCTUATIONS RANDOM-MATRIX-THEORY HOPPING CONDUCTIVITY WEAK LOCALIZATION DISORDERED METALS MAGNETIC-FIELDS SCALING THEORY FRACTAL MEDIA SUPERLOCALIZATION DIMENSIONS |
| ISSN号 | 0163-1829 |
| 通讯作者 | ZHANG, ZQ (reprint author), EXXON RES & ENGN CO,ROUTE 22 E,ANNANDALE,NJ 08801, USA. |
| 中文摘要 | We study the macroscopic and mesoscopic transport properties of granular metal films by using a quantum-percolation model. A granular metal film with metal fraction p is simulated by conducting grains randomly occupying the sites of a square lattice with probability p. Electrons are allowed to hop between nearest-neighbor grains. This model incorporates the granular properly of a film and enables us to study the magnetoconductance in both the weak- and strong-scattering regimes. The calculated magnetoconductance exhibits a sign change as the temperature varies, as well as oscillations as a function of the applied magnetic field. Both are consistent with some recent experimental data. The universal conductance fluctuations and resonant-tunneling characteristics are also studied systematically in both the extended and the localized regimes of mesoscopic samples. At the percolation threshold, the localization behavior is studied by using both the finite-size-scaling method and the resonant-tunneling method. Our results show no evidence for superlocalization. The effect of a magnetic field on localized wave functions at the percolation threshold is also examined. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51778]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | ZHANG, ZQ,SHENG, P. QUANTUM-PERCOLATION MODEL OF ELECTRONIC TRANSPORT IN 2-DIMENSIONAL GRANULAR METAL-FILMS[J]. PHYSICAL REVIEW B,1991,44(7):3304. |
| APA | ZHANG, ZQ,&SHENG, P.(1991).QUANTUM-PERCOLATION MODEL OF ELECTRONIC TRANSPORT IN 2-DIMENSIONAL GRANULAR METAL-FILMS.PHYSICAL REVIEW B,44(7),3304. |
| MLA | ZHANG, ZQ,et al."QUANTUM-PERCOLATION MODEL OF ELECTRONIC TRANSPORT IN 2-DIMENSIONAL GRANULAR METAL-FILMS".PHYSICAL REVIEW B 44.7(1991):3304. |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。