Distribution Function of Mesoscopic Hopping Conductance

作     者：何立群 LUODawei 等 

作者机构：DepartmentofThermalScienceandEnergyEngineeringUniversityofScienceandTechnologyofChinaHefei230026 MinervaCenterandJackandPearlResnickInstituteofAdvancedTechnologyDepartmento DepartmentofThermalScien 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2002年第19卷第11期

页      面：1683-1686页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0704[理学-天文学] 

基　　金：The Israel Science Foundation from the Israel Academy of Sciences and Humanities 国家教育部留学回国人员科研启动基金 安徽省自然科学基金 

主　　题：Distribution functions 

摘      要：We study mesoscopic hopping conductance by computer simulation distribution functions (DFs). It is found that the distributions obtainedby choosing randomly the chemical potentials (for a fixed impurity configuration), which corresponds to a typical experimental situation,coincide with those obtained when both impurity configuration and chemical potential are chosen randomly, in agreementwith the ergodicity hypothesis. The DFs in shape obtained for one-dimensional systems are found to be quite close to the predictionsof the theory by Raikh and Ruzin. For the two-dimensional case, the DFs both for a narrow system and thin film look to be similar (and close tothe one-dimensional case). The DF for the conductance of the square sample is nearly Gaussian.