A magnetic skyrmion diode based on potential well inducting effect

Area of Science:

• Condensed Matter Physics
• Materials Science
• Nanotechnology

Background:

• Magnetic skyrmions are topologically protected spin structures with high potential for spintronic devices.
• Controlling skyrmion motion is crucial for developing functional spintronic devices.

Purpose of the Study:

• To propose and theoretically investigate a skyrmion diode based on engineered potential wells.
• To demonstrate diode-like functions (forward pass and reverse cutoff) for magnetic skyrmions.

Main Methods:

• Theoretical calculations of skyrmion motion induced by a potential well.
• Utilizing voltage-controlled magnetic anisotropy (VCMA) gradients to generate potential wells.
• Analyzing skyrmion dynamics under the influence of the skyrmion Hall effect (SkHE).

Main Results:

• A skyrmion diode design based on potential well induced motion was proposed.
• Forward and reverse cutoff functions were realized by controlling skyrmion velocity and trajectory.
• VCMA gradients showed distinct pinning, depinning, and annihilation effects on forward and reverse moving skyrmions.

Conclusions:

• The proposed skyrmion diode effectively controls skyrmion motion for diode functionality.
• The findings are beneficial for the design and development of advanced magnetic skyrmion diodes.
• This work paves the way for novel spintronic device applications using magnetic skyrmions.