2021/09/22 by M. Merte, F. Freimuth, Frank Freimuth +15
Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Chalcogenide Semiconductor Thin Films #Charge (physics) #Condensed matter physics #Materials science #Physics #Quantum mechanics #Spin (aerodynamics) #Thermodynamics #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.104.l220405
arxiv created 2021/09/22 · openalex publication_date 2021/12/13 · arxiv updated 2021/12/22 · openalex created_date 2021/12/31 · openalex updated_date 2026/06/22
In the realm of two-dimensional materials, magnetic and transport properties of a unique representative Fe3GeTe2 attract ever increasing attention. Here, we use a developed first-principles method for calculating laser-induced response to study the emergence of photoinduced currents of charge and spin in single-layer Fe3GeTe2, which are of second order in the electric field. We provide a symmetry analysis of the emergent photocurrents in the system, finding it to be in excellent agreement with ab initio calculations. We analyze the magnitude and behavior of the charge photocurrents with respect to disorder strength, frequency, and band filling. Remarkably, not only do we find a large charge current response, but also predict that Fe3GeTe2 can serve as a source of significant laser-induced spin currents, which makes this material as a promising platform for various applications in optospintronics.