云南师范大学学报（自然科学版）2023，Vol.43Issue(6)：50-53,4.DOI:10.7699/j.ynnu.ns-2023-080
单层β12-硼烯双光子性质的理论研究
Theoretical Studies on Two-photon Absorption in Monolayerβ12-borophene
摘要
Abstract
The electron band structure of monolayerβ12-borophene was calculated by using the five-band tight binding theory,and the two-photon absorption spectrum of monolayerβ12-borophene in the visible to near-infrared band was calculated by using the second-order perturbation theory of photon-e-lectron interaction,revealing the modulation effect of the applied electric field on the electron band and the two-photon absorption peak near the contact points of the four energy bands of X,K,M and Λ.The results show that the applied electric field will bring the splitting of the degenerate band,and the en-hancement of the applied electric field will cause the two-photon absorption peak to be blueshifted and the peak value to be suppressed.Absorption peak enhancement due to two-photon resonance transi-tions occurs only when a forward electric field is applied near point M in the inversion asymmetric model and the energy of the electric field is in the range of 1.5～2.0 eV.关键词
单层β12-硼烯/紧束缚模型/双光子吸收Key words
β12-borophene/Tight binding model/Two-photon absorption分类
数理科学引用本文复制引用
吴梦璇,俞联梦,杨光,陈梦平,王琦闻,冯小波..单层β12-硼烯双光子性质的理论研究[J].云南师范大学学报（自然科学版）,2023,43(6):50-53,4.基金项目
国家自然科学基金资助项目(12264057). （12264057）
