Dynamic Localization of a One—Dimensional Quantum Dot Array in an ac Electric Field

作     者：罗莹 范文斌 等 

作者机构：DepartmentofPhysicsandInstituteofTheoreticalPhysicsBeijingNormalUniversityBeijing100875 InstituteofAppliedPhysicsandComputationalMathematicsPOBox8009Beijing100088 

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

年 卷 期：2002年第19卷第7期

页      面：981-984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）] 07[理学] 070205[理学-凝聚态物理] 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）] 0702[理学-物理学] 

基　　金：国家自然科学基金 中国工程物理研究院项目 

主　　题：Semiconductor quantum dots 

摘      要：We investigate the dynamics of two interaction electrons confined to one-dimensional quantum dot array in an ac electric field. We find that initially localized electrons will remain localized in the absence of Coulomb interaction if the ratio of the ac field magnitude to the frequency is a root of the ordinary zero-order Bessel function. In contrast to the case without Coulomb interaction, no matter what the value is, the electrons are delocalized and the delocalization effect depends on the ratio U/ω and eaE/ω, where U is the strength of Coulomb interaction, a is the lattice constant, and E and ω are the ac field amplitude and frequency, respectively.