Magnetic Skyrmions in Thickness-Modulated Films

Сапожников, М. В.; Ermolaeva, Olga; Скороходов, Е. В.; Гусев, Н. С.; Дроздов, М. Н.

doi:10.1134/s0021364018060115

“…To solve these problems, a promising approach is to pattern skyrmion racetracks by locally modifying the magnetic properties. The idea is to define a magnetic potential well that will help stabilize the skyrmions as well as guide their motion, leading to a faster and SkHE-free motion − combined with reduced pinning. This can be achieved by local ion-irradiation − and in particular with light ions such as He + .…”

mentioning

confidence: 99%

Helium Ions Put Magnetic Skyrmions on the Track

Juge

¹

,

Bairagi

²

,

Rana

³

et al. 2021

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“…The primary physical phenomenon driving these devices is the mutual repulsion of skyrmions resulting from the dipolar and exchange interactions. Skyrmions are also very sensitive to local variations of the magnetic properties, which can be exploited to design local potential wells that guide the skyrmion trajectory in logic circuits [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Programmable Skyrmion Logic Gates Based on Skyrmion Tunneling

Sisodia

¹

,

Pelloux-Prayer

²

,

Buda-Prejbeanu

³

et al. 2022

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Magnetic skyrmions are promising candidates as elementary nanoscale bits in logic-in-memory devices, intrinsically merging high-density memory and computing capabilities. Here we exploit the dynamics of skyrmions interacting with anisotropy energy barriers patterned by ion irradiation to design programmable logic gates. Using micromagnetic simulations with experimental parameters, we show that a fine tuning of the barrier height and width allows the selective tunneling of skyrmions between parallel nanotracks triggered by skyrmion-skyrmion interaction. This can be leveraged to design a skyrmion demultiplexer logic gate that works solely using skyrmions as logic inputs. By cascading and connecting demultiplexer gates with a specific topology, we develop a fully programmable logic gate capable of producing any possible logic output as a sum of all minterms generated by a given set of inputs without requiring any complex additional electric or magnetic interconversion. The proposed design is fully conservative and cascadable, enabling purely skyrmion-based logic-in-memory devices.

show abstract

“…The primary physical phenomenon driving these devices is the mutual repulsion of skyrmions resulting from the dipolar and exchange interactions. Skyrmions are also very sensitive to local variations of the magnetic properties, which can be exploited to design local potential wells that guide the skyrmion trajectory in logic circuits [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Programmable skyrmion logic gates based on skyrmion tunneling

Sisodia,

Pelloux-Prayer,

Buda-Prejbeanu

et al. 2022

Preprint

0

View full text Add to dashboard Cite

Magnetic skyrmions are promising candidates as elementary nanoscale bits in logic-in-memory devices, intrinsically merging high density memory and computing capabilities. Here we exploit the dynamics of skyrmions interacting with anisotropy energy barriers patterned by ion irradiation to design programmable logic gates. Using micromagnetic simulations with experimental parameters, we show that a fine tuning of the barrier height and width allows the selective tunneling of skyrmions between parallel nanotracks triggered by skyrmion-skyrmion interaction. This can be leveraged to design skyrmion De-multiplexer (DMux) logic gate which works solely using skyrmions as logic inputs. By cascading and connecting demultiplexer gates with a specific topology, we develop a fully programmable logic gate capable of producing any possible logic output as a sum of all minterms generated by a given set of inputs without requiring any complex additional electric/magnetic interconversion. The proposed design is fully conservative and cascadable and paves a new pathway for full skyrmionic-based logic-in-memory devices.

show abstract

Magnetic Skyrmions in Thickness-Modulated Films

Cited by 18 publications

References 22 publications

Helium Ions Put Magnetic Skyrmions on the Track

Helium Ions Put Magnetic Skyrmions on the Track

Programmable Skyrmion Logic Gates Based on Skyrmion Tunneling

Programmable skyrmion logic gates based on skyrmion tunneling

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