Real-Passband Estimation for Modulated Superlattices Based on Circuit Theory

This paper presents that Gaussian superlattices modulated layer thickness form a band structure, which consists of real-passbands, quasi-passbands and stopbands, same as those modulated potential height unlike the periodic superlattices. This paper shows a close relation between the band structure of Gaussian superlattices modulated layer thickness and that of periodic superlattices. According to the relation, the real-passbands of the former can be estimated with simple calculation from the latter effectively evaluated by applying image parameters in circuit theory