Publication Date:
2017-09-27
Description:
Author(s): Henan Liu, Yong Zhang, Elizabeth H. Steenbergen, Shi Liu, Zhiyuan Lin, Yong-Hang Zhang, Jeomoh Kim, Mi-Hee Ji, Theeradetch Detchprohm, Russell D. Dupuis, Jin K. Kim, Samuel D. Hawkins, and John F. Klem InAs/In(As,Sb) type-II superlattices are of increasing interest for their practical advantages in device applications, particularly IR detection. This comparative study of highest-quality superlattices grown by different techniques and groups establishes the utility of Raman spectroscopy as an efficient, nondestructive technique for characterizing these systems. It also provides a unified understanding of the mechanism of the appearance of forbidden optical-phonon modes in four quite different categories of superlattices, and even bulk alloys with unintended structural modulations. [Phys. Rev. Applied 8, 034028] Published Tue Sep 26, 2017
Electronic ISSN:
2331-7019
Topics:
Physics
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