中国物理B ›› 2010, Vol. 19 ›› Issue (10): 107202-107202.doi: 10.1088/1674-1056/19/10/107202
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
钟光辉1, 王立民2
Zhong Guang-Hui(钟光辉)a) and Wang Li-Min(王立民)b)†ger
摘要: This paper studies the constraint conditions for coherence destruction in tunneling by using perturbation theory and numerical simulation for an AC-field with bias and Coulomb interaction between electrons in a quantum dot molecule. Such conditions can be described by using the roots of a Bessel function Jn(x), where n is determined by both the bias and the Coulomb interactions, and x is the ratio of the amplitude to the frequency of the AC-field. Under such conditions, a coherent suppression of tunneling occurs between localized electronic states, which results from the dynamical localization phenomenon. All the conditions are verified with numerical simulations.
中图分类号: (Methods of electronic structure calculations)