Skyrmion Dynamics in a Double-Disk Geometry under an Electric Current
In this work, we present an analysis of skyrmion dynamics considering Dzyaloshinskii–Moriya interactions in an STNO device with a double-disk geometry. Three regimes were observed as a function of geometric parameters and the electric current density: (i) the skyrmion is annihilating at the system’s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/18/3086 |
| _version_ | 1797484217689440256 |
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| author | Sebastián Castillo-Sepúlveda Javier A. Vélez Rosa M. Corona Vagson L. Carvalho-Santos David Laroze Dora Altbir |
| author_facet | Sebastián Castillo-Sepúlveda Javier A. Vélez Rosa M. Corona Vagson L. Carvalho-Santos David Laroze Dora Altbir |
| author_sort | Sebastián Castillo-Sepúlveda |
| collection | DOAJ |
| description | In this work, we present an analysis of skyrmion dynamics considering Dzyaloshinskii–Moriya interactions in an STNO device with a double-disk geometry. Three regimes were observed as a function of geometric parameters and the electric current density: (i) the skyrmion is annihilating at the system’s border; (ii) the skyrmion moves in a non-circular trajectory alternating its position between the two disks, and (iii) the skyrmion only rotates inside a one-disk subsystem. For the annihilation state, we found that the transient time decays within a stretched exponential law as a function of the electric current. Our results show a 2D state diagram that can guide new experimental work in order to obtain these specific behaviors for new applications based on skyrmion dynamics. |
| first_indexed | 2024-03-09T22:59:15Z |
| format | Article |
| id | doaj.art-a9bb879987fa4b56911ff7dd83c951ac |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T22:59:15Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-a9bb879987fa4b56911ff7dd83c951ac2023-11-23T18:05:13ZengMDPI AGNanomaterials2079-49912022-09-011218308610.3390/nano12183086Skyrmion Dynamics in a Double-Disk Geometry under an Electric CurrentSebastián Castillo-Sepúlveda0Javier A. Vélez1Rosa M. Corona2Vagson L. Carvalho-Santos3David Laroze4Dora Altbir5Grupo de Investigación en Física Aplicada, Facultad de Ingeniería, Universidad Autónoma de Chile, Avda. Pedro de Valdivia 425, Providencia 7500912, ChileDepartamento de Polímeros y Materiales Avanzados: Física, Química y Tecnología, Universidad del País Vasco, UPV/EHU, Paseo M. Lardizabal, 3, 20018 San Sebastián, SpainDepartamento de Física, CEDENNA, Universidad de Santiago de Chile, Avda. Víctor Jara 3493, Estación Central, Santiago 9170022, ChileDepartamento de Física, Universidade Federal de Viçosa, Avenida Peter Henry Rolfs s/n, Viçosa 36570-000, MG, BrazilInstituto de Alta Investigación, Universidad de Tarapacá, Casilla 7D, Arica 1000000, ChileDepartamento de Física, CEDENNA, Universidad de Santiago de Chile, Avda. Víctor Jara 3493, Estación Central, Santiago 9170022, ChileIn this work, we present an analysis of skyrmion dynamics considering Dzyaloshinskii–Moriya interactions in an STNO device with a double-disk geometry. Three regimes were observed as a function of geometric parameters and the electric current density: (i) the skyrmion is annihilating at the system’s border; (ii) the skyrmion moves in a non-circular trajectory alternating its position between the two disks, and (iii) the skyrmion only rotates inside a one-disk subsystem. For the annihilation state, we found that the transient time decays within a stretched exponential law as a function of the electric current. Our results show a 2D state diagram that can guide new experimental work in order to obtain these specific behaviors for new applications based on skyrmion dynamics.https://www.mdpi.com/2079-4991/12/18/3086magnetic skyrmionsspin torque nano-oscillatorsdynamicsmicromagnetism |
| spellingShingle | Sebastián Castillo-Sepúlveda Javier A. Vélez Rosa M. Corona Vagson L. Carvalho-Santos David Laroze Dora Altbir Skyrmion Dynamics in a Double-Disk Geometry under an Electric Current Nanomaterials magnetic skyrmions spin torque nano-oscillators dynamics micromagnetism |
| title | Skyrmion Dynamics in a Double-Disk Geometry under an Electric Current |
| title_full | Skyrmion Dynamics in a Double-Disk Geometry under an Electric Current |
| title_fullStr | Skyrmion Dynamics in a Double-Disk Geometry under an Electric Current |
| title_full_unstemmed | Skyrmion Dynamics in a Double-Disk Geometry under an Electric Current |
| title_short | Skyrmion Dynamics in a Double-Disk Geometry under an Electric Current |
| title_sort | skyrmion dynamics in a double disk geometry under an electric current |
| topic | magnetic skyrmions spin torque nano-oscillators dynamics micromagnetism |
| url | https://www.mdpi.com/2079-4991/12/18/3086 |
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