Interlayer Dzyaloshinskii-Moriya Interactions.

Area of Science:

• Condensed Matter Physics
• Materials Science
• Spintronics

Background:

• The interfacial Dzyaloshinkii-Moriya interaction (DMI) is crucial for creating chiral magnetic structures like skyrmions in 2D magnetic films.
• Controlling chirality in magnetic materials is essential for developing advanced spintronic devices.

Purpose of the Study:

• To investigate the emergence of interlayer Dzyaloshinkii-Moriya type coupling in magnetic heterostructures.
• To quantify this interlayer DMI within a theoretical framework for trilayer systems.
• To explore the resulting three-dimensional spin textures and their chiral properties.

Main Methods:

• Atomistic calculations were employed to model magnetic heterostructures.
• The Lévy-Fert model was used to quantify the interlayer DMI in ferromagnet-spacer-ferromagnet trilayers.
• Analysis focused on the resulting spin textures and their intraplane and interplane chiralities.

Main Results:

• An interlayer coupling of the Dzyaloshinkii-Moriya type was shown to emerge across a nonmagnetic spacer in heterostructures.
• This interlayer DMI was quantified, revealing its significance in trilayer systems.
• Nontrivial three-dimensional spin textures were observed, exhibiting combined intraplane and interplane chiralities.

Conclusions:

• The study demonstrates the feasibility of inducing and controlling DMI across spacers in magnetic multilayers.
• The findings open new avenues for engineering complex 3D chiral magnetic structures.
• This work has significant implications for the design of next-generation spintronic devices with tailored magnetic properties.