Controllable transport of a skyrmion in a ferromagnetic narrow channel with voltage-controlled magnetic anisotropy

Abstract

Magnetic skyrmions have potential applications in next-generation spintronics devices with ultralow energy consumption. In this work, the current-driven skyrmion motion in a narrow ferromagnetic nanotrack with voltage-controlled magnetic anisotropy (VCMA) is studied numerically. By utilizing the VCMA effect, the transport of skyrmion can be unidirectional in the nanotrack, leading to a one-way information channel. The trajectory of the skyrmion can also be modulated by periodically located VCMA gates, which protects the skyrmion from destruction by touching the track edge. In addition, the location of the skyrmion can be controlled by adjusting the driving pulse length in the presence of the VCMA effect. Our results provide guidelines for practical realization of the skyrmion-based information channel, diode, and racetrack memory.

arXiv comment5 pages, 8 figures

References in corpus (13)

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• Complementary Skyrmion Racetrack Memory with Voltage Manipulation
• Magnetic Domain Wall Engineering in a Nanoscale Permalloy Junction

Cited by in corpus (5)

• Dynamics of the antiferromagnetic skyrmion induced by a magnetic anisotropy gradient
• Skyrmion pinning energetics in thin film systems
• Skyrmion Logic Clocked via Voltage Controlled Magnetic Anisotropy
• Voltage-Controlled Skyrmionic Interconnect with Multiple Magnetic Information Carriers
• Logical and Physical Reversibility of Conservative Skyrmion Logic