Transverse domain wall profile for spin logic applications.

Area of Science:

• Spintronics
• Nanotechnology
• Materials Science

Background:

• Domain walls (DW) are crucial for advanced logic and memory devices.
• Precise control of DW, especially transverse DWs (TDW), is essential for deterministic manipulation in complex nanowire networks.
• In-situ control of TDW topological defects is key for developing novel DW logic applications.

Purpose of the Study:

• To present a method for geometrical modulation in nanowire conduits to control TDW.
• To achieve topological rectification and inversion of TDW.
• To demonstrate the feasibility of DW-based logic operations.

Main Methods:

• Geometrical modulation of nanowire conduits.
• Exploiting controlled relaxation of TDW within an angled rectangle structure.
• Magnetic force microscopy (MFM) for in-situ measurement and evidence gathering.

Main Results:

• Demonstrated successful topological rectification/inversion of TDW.
• Achieved precise control over DW behavior using geometric design.
• Provided direct experimental evidence of logical operation via MFM.

Conclusions:

• Geometrical modulation of nanowires offers a viable method for controlling TDW topology.
• This technique enables deterministic manipulation of DWs for logic applications.
• The study provides a foundation for developing new spintronic devices based on DW manipulation.