We realize a magnetic skyrmion diode operated by a unidirectional skyrmion transport that flows in only one direction, which is highly significant for information processing in spintronic and nanoelectronic devices. We easily control the skyrmion transport by engineering asymmetric shapes of geometric structures. Here, we present a simple method to describe the underlying mechanism behind the unidirectional skyrmion transport by characterizing the topography of potential energy surfaces from a purely geometric perspective. Our approach enables a deeper physical insight into skyrmion transport manipulation and efficient design of skyrmion-based devices in geometric structures.

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• Magnetic texture
• Magnetism
• Magnetization dynamics
• Micromagnetism
• Spin dynamics
• Diodes
• Ferromagnets
• Magnetic systems
• Nanostructures
• Nanowires
• Noncollinear magnets
• Thin films
• Transition metal dichalcogenides
• Boltzmann theory
• Landau-Lifschitz-Gilbert equation
• Landau-Lifshitz model
• Methods in magnetism
• Methods in transport
• Micromagnetic modeling
• Numerical techniques