Speaker
Description
Topological materials offer many interesting quantum phenomena such as anomalous Hall effect(AHE), topological Hall effect (THE), quantum spin liquid state, and skyrmion lattice. Among thesematerials, Mn3+xGe is one of the interesting materials as it has a triangular spin-lattice in the kagomenetwork. Due to this arrangement, collinear antiferromagnetic (AFM) alignment is impossible whichcreates frustration in the spin system. To minimize energy while stabilizing the frustations, the Mn spins adopt a 120˚ non-collinear AFM structure instead of collinear AFM. This spin orientation breaksthe inversion symmetry locally and produces quantum mechanical effects like AHE, THE, etc.
In this present work, we systematically studied the electronic, and magnetic properties and exchange coupling between Mn3Ge, and ferromagnetic Fe layered in a quantum heterostructure. For this, depth resolved elemental and magnetic density profiles of the system were obtained by fitting the simulated data with the experimental data measured using Resonant X-ray reflectometry (RXR) at RSXS endstation of the REIXS beamline in the Canadian Light Source. These structural and magnetic density profiles gave a better visualization of the sample as well as important information about how magnetization affects the non-collinear AFM Mn3Ge and ferromagnetic Fe layer in the system and atthe interface. This research enabled us to enhance our understanding of advanced materials in spintronic device functions and contribute to new developments in electronics and magnetic technology. In addition, it highlights Resonant X-ray reflectometry as a powerful, non-destructive, and emerging technique for novel and advanced materials.
| Keyword-1 | Quantum Materials |
|---|---|
| Keyword-2 | Resonant X-ray Reflectometry |
| Keyword-3 | non-collinear AFM |