Nonlinear Correction to Stark Ladders

作     者：赵宪庚 

作者机构：International Centre for Materials PhysicsAcademia SinicaShenyang 110015PRCand Institute of Theoretical PhysicsAcademia SinicaBeijing 100080PRC 

出 版 物：《Science China Mathematics》 (中国科学：数学（英文版）)

年 卷 期：1994年第37卷第1期

页      面：81-86页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：Project supported in part by the National Natural Science Foundation of China the Grant LWTZ-1298 Academia Smica 

主　　题：Stark ladder nonlinear correction onset magnitude 

摘      要：The problem of a band electron in a crystal with alternating hoppings is investigated in the presence of a uniform electric *** solutions for the energy spectrum and the wave functions are obtained with the help of SU(2) *** is found that the energy spectrum contains all orders of the reciprocal of the applied electric field besides the usual Stark ladders.A theoretical analysis shows that in the weak field regime,such nonlinear terms will dominate the localization behavior of the band *** in the strong field regime am the Wannie-Stark localization be observed *** onset magnitude of the electric field strength for the occurrence of the Wannie-Stark localization is about 2×105V/m for common semiconductor superlattices,which is consistent with experimental observations.