Interface modulated electron mobility enhancement in core–shell nanowires  

作　　者：Yan He Hua-Kai Xu Gang Ouyang 贺言;许华慨;欧阳钢(College of Science,Guangdong University of Petrochemical Technology,Maoming 525000,China;Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education,Key Laboratory for Matter Microstructure and Function of Hunan Province,School of Physics and Electronics,Hunan Normal University,Changsha 410081,China)

机构地区：[1]College of Science,Guangdong University of Petrochemical Technology,Maoming 525000,China [2]Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education,Key Laboratory for Matter Microstructure and Function of Hunan Province,School of Physics and Electronics,Hunan Normal University,Changsha 410081,China

出　　处：《Chinese Physics B》2022年第11期256-261,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.91833302 and U2001215);the Guangdong Basic and Applied Basic Research Foundation,China(Grant No.2022A1515010989);the Special Project in Key Fields of Guandong Universities,China(Grant No.2022ZDZX3015)。

摘　　要：The transport properties of core–shell nanowires(CSNWs)under interface modulation and confinement are investigated based on the atomic-bond-relaxation(ABR)correlation mechanism and Fermi’s golden rule.An analytical expression for the relationship between carrier mobility and interface mismatch strain is derived and the influence of size,shell thickness and alloyed layer on effective mass,band structures,and deformation potential constant are studied.It is found that interface modulation can not only reduce the lattice mismatch to optimize the band alignment,but also participate in the carrier transport for enhancing mobility.Moreover,the underlying mechanism regarding the interface shape dependence of transport properties in CSNWs is clarified.The great enhancement of electron mobility suggests that the interface modulation may become a potential pathway to improving the performance of nanoelectronic devices.

关 键 词：core-shell nanowires interface modulated electron mobility 

分 类 号：O562[理学—原子与分子物理]