Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Xuan, Fengyuan"'
Autor:
Liu, Yue, He, Wen, Wu, Bingze, Xuan, Fengyuan, Fang, Yuqiang, Zhong, Zhengbo, Fu, Jierui, Wang, Jiapeng, Li, Zhipeng, Wang, Jinzhong, Yao, Mingguang, Huang, Fuqiang, Zhen, Liang, Li, Yang, Xu, Chengyan
Second harmonic generation (SHG) in van der Waals (vdWs) materials has garnered significant attention due to its potential for integrated nonlinear optical and optoelectronic applications. Stacking faults in vdWs materials, a typical kind of planar d
Externí odkaz:
http://arxiv.org/abs/2402.19129
We show that the shift current in bulk photovoltaics originates from a light-induced shift of charge centers to the many-body excited states. This many-body shift vector is expressed, using a sum-rule, in terms of pairs of nearly-degenerate optically
Externí odkaz:
http://arxiv.org/abs/2402.02002
Publikováno v:
Phys. Rev. Lett. 132, 246902 (2024)
We show that excitonic resonances and interexciton transitions can enhance the probability of spontaneous parametric down-conversion, a second-order optical response which generates entangled photon pairs. We benchmark our ab initio many-body calcula
Externí odkaz:
http://arxiv.org/abs/2305.08345
Autor:
Xuan, Fengyuan, Quek, Su Ying
Publikováno v:
npj Comput Mater 7, 198 (2021)
Carrier-doped transition metal dichalcogenide (TMD) monolayers are of great interest in valleytronics due to the large Zeeman response (g-factors) in these spin-valley-locked materials, arising from many-body interactions. We develop an \textit{ab in
Externí odkaz:
http://arxiv.org/abs/2107.08197
Publikováno v:
J. Phys. Chem. Lett. 11, 9358-9363 (2020)
Mixed-dimensional magnetic heterostructures are intriguing, newly available platforms to explore quantum physics and its applications. Using state-of-the-art many-body perturbation theory, we predict the energy level alignment for a self-assembled mo
Externí odkaz:
http://arxiv.org/abs/2010.14012
Publikováno v:
2D Mater. 6 035036 (2019)
Two-dimensional (2D) materials are increasingly being used as active components in nanoscale devices. Many interesting properties of 2D materials stem from the reduced and highly non-local electronic screening in two dimensions. While electronic scre
Externí odkaz:
http://arxiv.org/abs/2005.14374
Autor:
Xuan, Fengyuan, Quek, Su Ying
Publikováno v:
Phys. Rev. Research 2, 033256 (2020)
This paper presents a theoretical description of both the valley Zeeman effect (g-factors) and Landau levels in two-dimensional H-phase transition metal dichalcogenides (TMDs) using the Luttinger-Kohn approximation with spin-orbit coupling. At the va
Externí odkaz:
http://arxiv.org/abs/2002.11993
We present a fully ab initio approach based on many-body perturbation theory in the GW approximation, to compute the quasiparticle levels of large interface systems without significant covalent interactions between the different components of the int
Externí odkaz:
http://arxiv.org/abs/1903.01847
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