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Progress in Physics

Table of Content

    12 October 2020, Volume 38 Issue 4    Next Issue
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    Applications of infrared spectroscopy in the study of iron-based superconductors
    Dai Yao-Min
    2018, 38 (4):  147-162. 
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    Infrared spectroscopy, as a bulk-sensitive technique, plays an important role in the study of unconventional superconducting materials. In this article, I will introduce the fundamentals of Fourier transform infrared spectroscopy, the in situ gold evaporation technique used to accurately measure the absolute reflectivity of solid materials, the methods and models we used for optical data analysis, and how we can use infrared spectroscopy to investigate the important and fascinating quantum phenomena in iron-based superconductors, such as the superconducting gaps, electronic pairing symmetry, spin-density-wave gaps, non-Fermi liquid behavior, lattice vibrations, as well as the relation and interaction between different orders and excitations.
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    The research progress on photoelectric properties of two-dimensional nanomaterial black phosphorus
    You Kai-Xi, Fan Tao-Jian, Ge Yan-Qi, Zhang Han
    2018, 38 (4):  163-174. 
    PDF (16299KB) ( 355 )  
    A novel 2D layered material BP with adjustable bandgap can ll the gap between graphene and TMD. Since its discovery, this new type of 2D material attracted much attention of researchers, own to its unique 2D structure and photoelectric properties. It is noteworthy that BP is a very promising ultra-compact nonlinear optical material with excellent nonlinear performance. In this review, we summarize the preparation methods of 2D BP, and focus on its unique optoelectronic properties and application in optoelectronic devices. At the end of this article, we also discuss the application prospects of BP and present some of the problems to be solved at this stage.
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