147 citations · 330 across the 5 of their papers we have counts for
7 papers · 1 filter
Ab initio study of proton-exchanged LiNbO3(I): Structural, thermodynamic, dielectric, and optical properties
Lingyuan Gao, Robert B. Wexler, Ruixiang Fei +1
Using first principles calculations, we study the ground-state structure of bulk proton-exchanged lithium niobate, which is also called hydrogen niobate and is widely used in waveg…
Switchable enhanced spin photocurrent in Rashba and cubic Dresselhaus ferroelectric semiconductors
Ruixiang Fei, Shuaiqin Yu, Yan Lu +2
Generating and controlling spin current (SC) are of central interest in spin physics and applications. To date, the spin-orbit interaction (SOI) is an established pathway to genera…
Intrinsic Spin Photogalvanic Effect in Nonmagnetic Insulator
Ruixiang Fei, Xiaobo Lu, Li Yang
We show that with the help of spin-orbit coupling, nonlinear light-matter interactions can efficiently couple with spin and valley degrees of freedom. This revealed spin photogalva…
Nonreciprocal Second-Harmonic Generation in Few-Layer Chromium Triiodide
Wenshen Song, Ruixiang Fei, Li Yang
It is of fundamental importance but challenging to simultaneously identify atomic and magnetic configurations of two-dimensional van der Waals materials. In this work, we show that…
Giant linearly-polarized photogalvanic effect and second harmonic generation in two-dimensional axion insulators
Ruixiang Fei, Wenshen Song, Li Yang
The second-order nonlinear optical (NLO) processes, such as the photogalvanic effect and second-order harmonic generation (SHG), play crucial roles in probing and controlling light…
Shift current bulk photovoltaic effect influenced by quasiparticles and excitons
Ruixiang Fei, Liang Z. Tan, Andrew M. Rappe
We compute the shift current bulk photovoltaic effect (BPVE) in bulk BaTiO and two-dimensional monochalcogenide SnSe considering quasi-particle corrections and exciton effects.…