Origin of the Efficient Nonlinear Optical Response of Two-dimensional Layered CuFeTe2 Nanosheets
发布时间：2022-08-14
点击次数：
DOI码：10.1021/acs.jpclett.2c01740
所属单位：中南大学
发表刊物：The Journal of Physical Chemistry Letters
摘要：Two-dimensional ternary transition metal chalcogenides (TMCs) have aroused great research interest owing to outstanding semiconducting properties and diverse magnetic response. CuFeTe2, as a typical TMC, exhibits ambiguous magnetic behavior and ground state of spin density waves nature. Herein, we first report efficient nonlinear absorption and superior nonlinear refraction of CuFeTe2 nanosheets. The nonlinear absorption and refraction coefficients reach -0.22 cm⁄GW and -1.66×10^(-12) 〖cm〗^2⁄W, respectively. Semi-empirical theory for direct bandgap semiconductor was applied to estimate the nonlinearities of CuFeTe2 nanosheets. The calculation results indicate that the efficient nonlinearities stem from free carriers induced band filling effect.
合写作者：Wenxuan Fan, Defeng Xu, Yulan Dong, Zhi Chen, Ziyang Gu, Mei Fang, Si Xiao
第一作者：Zhihui Chen
论文类型：期刊论文
通讯作者：Menglong Zhu, Jun He
学科门类：理学
一级学科：物理学
文献类型：J
是否译文：否
发表时间：2022-08-14
收录刊物：SCI