6 papers
Spin lifetime anisotropy in graphene induced by the SiO2 interface
Aron W. Cummings, Chunhao Guo, Andrew Grieder +5
Understanding how common dielectric substrates influence the spin transport properties of graphene is essential for advancing graphene-based spintronic technologies. Here we use a…
Chirality-Induced Spin Selectivity: Nonlinear Spin Response from Electron-Phonon Scattering
Mayank Gupta, Andrew Grieder, Mayada Fadel +4
Chirality-induced spin selectivity (CISS) generates spin-polarized currents in nonmagnetic materials from structural chirality alone, yet its microscopic origin remains debated. Us…
Photogalvanic currents from first-principles real-time density-matrix dynamics
Junting Yu, Andrew Grieder, Jacopo Simoni +3
The photogalvanic effect is the generation of a second-order direct current by illumination of a non-centrosymmetric material. In this work, we develop a first-principles real-time…
Spin non-Collinear Real-Time Time-Dependent Density-Functional Theory and Implementation in the Modern GPU-Accelerated INQ code
Jacopo Simoni, Xavier Andrade, Wuzhang Fang +4
Time-dependent density functional theory (TDDFT) is a theory that describes the time evolution of quantum mechanical many-electron systems under the influence of external time-depe…
Relation of Continuous Chirality Measure to Spin and Orbital Polarization, and Chiroptical Properties in Solids
Andrew Grieder, Shihao Tu, Yuan Ping
Chirality introduces intriguing topological, electronic, and spin-optronic properties to molecules and solids. In this work, we provide a quantitative metric for the degree of chir…
Carrier Localization and Spontaneous Formation of Two-Dimensional Polarization Domain in Halide Perovskites
Andrew Grieder, Marcos Calegari Andrade, Hiroyuki Takenaka +3
Halide perovskites are known for their rich phase diagram and superior performance in diverse optoelectronics applications. The latter property is often attributed to the long elec…