从对称到非对称双势阱中量子隧穿特性的研究  

Study of the quantum tunneling from the symmetric to asymmetric double-well potential

作　　者：曹冬梅[1] 曾祥梅[2] 徐红[1] 

机构地区：[1]延安大学物理与电子信息学院,陕西延安716000 [2]西安邮电学院电子与信息工程系,陕西西安710062

出　　处：《陕西理工学院学报（自然科学版）》2007年第2期46-48,81,共4页Journal of Shananxi University of Technology:Natural Science Edition

摘　　要：利用二能级近似通过对对称和非对称双势阱波函数的研究,揭示了基态和激发态量子隧穿随外场变化的规律。对称势阱内的量子隧穿是自发的、活跃的。非对称势阱内,即使附加静电场相当小时波函数就出现了定域,量子隧穿现象完全消失。根据波函数的动态定域特点得到了量子隧穿的动态消失过程。In tills paper wave functions of symmetric and asymmetric double - well potential are studied in two - level approximation arid it is demonstrated that quarltum tunnelirlg varies with the variation of the static electric field strength. The quantum tunneling in the symmetric double well is spontaneous and active, while in asymmetric double well, even the strength of the electric field is little the quantum tunneling disappears completely. Based on the dynamic process of the localized wave function the dynamic vanishing process of quantum tunneling is obtained.

关 键 词：双势阱 静电场 量子隧穿 动态消失 

分 类 号：O413.1[理学—理论物理]