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physics.comp-ph2019★ 52 cited
Large Second-Harmonic Generation and Linear Electro-Optic Effect in Trigonal Selenium and Tellurium
Meijuan Cheng, Shunqing Wu, Zi-Zhong Zhu +1
Trigonal selenium and tellurium crystalize in helical chain-like structures and thus possess interesting properties such as current-induced spin polarization, gyrotropic effects an…
physics.comp-ph2009★ 24 cited
Tuning linear and nonlinear optical properties of wurtzite GaN by c-axial stress
Duanjun Cai, Guang-Yu Guo
We study the linear and nonlinear optical properties of wurtzite GaN under c-axial stress field, using density functional theory calculations. The fully structural optimization at…
physics.comp-ph2009★ 9 cited
Microscopic origin of light emission in Al_yGa_{1-y}N/GaN superlattice: Band profile and active site
Duanjun Cai, Junyong Kang, Guang-Yu Guo
We present first-principles calculations of AlGaN/GaN superlattice, clarifying the microscopic origin of the light emission and revealing the effect of local polarization within th…