SKM 2023 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 23: Poster Magnetism I

MA 23.58: Poster

Dienstag, 28. März 2023, 17:00–19:00, P1

Quantum transport through 2D metallic magnets: Effects of defects and stacking sequence — Masoumeh Davoudiniya and •Biplab Sanyal — Department of Physics and Astronomy, Uppsala University, Box 516, 751,20 Uppsala, Sweden

In recent times, two-dimensional van der Waals (vdW) bonded magnetic materials with high Curie temperatures have attracted a lot of attraction due to their high potential in future spintronic nanodevices. In this regard, it is important to understand the properties of these magnetic systems even in the presence of several types of defects and stacking of layers, often controlling the properties. Based on density functional theory calculations, this work aims to theoretically address the quantum transport properties of Fe4GeTe2 (FGT) as new 2D vdW layered metallic magnetic materials applicable for the next-generation electronic and magnetic industry. In particular, we investigate the spin-dependent electronic transport through vdW bonded FGT layers connected to Cu electrodes by nonequilibrium Green*s function approach. The influence of the inclusion of Fe atoms in the vdW gap and stacking sequence of layers will be discussed too. Moreover, we will present the studies on the magnetoresistance of the system for different magnetic configurations of FGT layers separated by semimetallic and insulating 2D layers.