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Photocurrents of charge and spin in single-layer Fe$ 3$GeTe$ 2$ by Merte, M.; Freimuth, F.; Adamantopoulos, T.; Go, D.; Saunderson, T. G.; Kläui, M.; Plucinski, L.; Gomonay, O.; Blügel, S.; Mokrousov, Y. is a scholarly article available to read on EtoBox.

What is Photocurrents of charge and spin in single-layer Fe$ 3$GeTe$ 2$ about?

In the realm of two-dimensional materials magnetic and transport properties of a unique representative $-$ Fe$_3$GeTe$_2$ $-$ attract ever increasing attention. Here, we use a developed first-principles method for calculating laser-induced response to study the emergence of photo-induced currents of charge and spin in single-layer Fe$_3$GeTe$_2$, 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 analyse 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 Fe$_3$GeTe$_2$ can serve as a source of significant laser-induced spin-currents, which makes this material as a promising platform for various applications in optospintronics.

Author

Merte, M.; Freimuth, F.; Adamantopoulos, T.; Go, D.; Saunderson, T. G.; Kläui, M.; Plucinski, L.; Gomonay, O.; Blügel, S.; Mokrousov, Y.

Published

2021

Language

EN