Seminarium Advanced Methods of Semiconductor Research – Wtorek 27 stycznia 2026
We cordially invite you to Advanced Methods of Semiconductor Research Seminar on Tuesday 27th of January 2026 at 13:15 in room 321, building A-1, where there will be delivered a lecture:
Magnetic proximity effect in transition-metal dichalcogenides
by Agata Zielińska
from Department of Experimental Physics, Wrocław Tech
The lecture abstract is attached below.
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Lecture abstract:
Layered van der Waals (vdW) materials present new possibilities for designing novel electronic devices, as they include various types of materials – metals, semiconductors, insulators – which can be combined in different heterostructures. Atomically thin nature of layers in vdW heterostructures opens new paths to engineer properties of these structures through proximity effects, where a given physical property of a 2D layer can be modified by the adjacent material. In particular, when a thin layer of a nonmagnetic material – e.g. transition-metal dichalcogenide (TMDC) – is in contact with a ferromagnetic material, it will experience the short-ranged proximity-induced magnetic exchange interaction. This should induce a finite spin polarization in the TMDC layer, as a result of the splitting of the conduction and valence bands. The strength of this effect should be reflected in a finite degree of circular polarization (DOCP) of the emitted light, Zeeman-like splitting visible without an external magnetic field or change of the g-factor in the magnetic field.
In my presentation I will discuss how the magnetic proximity effect influences the optical properties of TMDCs, illustrating it with the results of my own experiments. I will focus on two types of heterostructures – FGT/MoS2/hBN and FGT/WSe2/hBN. I will present and discuss the results of micro-photoluminescence and micro-reflectivity measurements which I performed in the magnetic field up to 16T. I will compare the optical properties of the MoS2 and WSe2 monolayers being in contact with FGT to the properties of the reference encapsulated monolayers, highlighting the influence of the magnetic proximity effect.