Dynamic Localization of a One-Dimensional Quantum Dot Array in an ac Electric Field
LUO Ying1,2, DUAN Su-Qing2, FAN Wen-Bin2,3, ZAO Xian-Geng2, WANG Li-Min1, MA Ben-Kun1
1Department of Physics and Institute of Theoretical Physics, Beijing Normal University Beijing 100875
2Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100088
3State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
Dynamic Localization of a One-Dimensional Quantum Dot Array in an ac Electric Field
LUO Ying1,2;DUAN Su-Qing2;FAN Wen-Bin2,3;ZAO Xian-Geng2;WANG Li-Min1;MA Ben-Kun1
1Department of Physics and Institute of Theoretical Physics, Beijing Normal University Beijing 100875
2Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100088
3State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
Abstract： 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 maintain 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.
LUO Ying;DUAN Su-Qing;FAN Wen-Bin;ZAO Xian-Geng;WANG Li-Min;MA Ben-Kun. Dynamic Localization of a One-Dimensional Quantum Dot Array in an ac Electric Field[J]. 中国物理快报, 2002, 19(7): 981-984.
LUO Ying, DUAN Su-Qing, FAN Wen-Bin, ZAO Xian-Geng, WANG Li-Min, MA Ben-Kun. Dynamic Localization of a One-Dimensional Quantum Dot Array in an ac Electric Field. Chin. Phys. Lett., 2002, 19(7): 981-984.
2002, Vol. 19 
