Densely packed skyrmions stabilized at zero magnetic field by indirect exchange coupling in multilayers
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2022
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914745281413120 |
|---|---|
| author | Ajejas, Fernando Sassi, Yanis Legrand, William Srivastava, Titiksha Collin, Sophie Vecchiola, Aymeric Bouzehouane, Karim Reyren, Nicolas Cros, Vincent |
| author_facet | Ajejas, Fernando Sassi, Yanis Legrand, William Srivastava, Titiksha Collin, Sophie Vecchiola, Aymeric Bouzehouane, Karim Reyren, Nicolas Cros, Vincent |
| contents | Room-temperature stabilization of skyrmions in magnetic multilayered systems is the result of a fine balance between different magnetic interactions namely symmetric and antisymmetric exchange, dipolar, perpendicular magnetic anisotropy as well as, in most cases, Zeeman through an applied external field. Such field-driven stabilization approach is not compatible with most of the anticipated skyrmion based applications, e.g. skyrmion memories, logic or neuromorphic computing which motivates a reduction or a cancellation of field requirements. Here we present a method to stabilize at room-temperature and zero-field, a densely packed skyrmion phase in ferromagnetic multilayers with moderate number of repetitions. To this aim, we finely tune the multilayer parameters to stabilize a dense skyrmion phase. Then, relying on the interlayer electronic coupling to an adjacent bias magnetic layer with strong perpendicular magnetic anisotropy and uniform magnetization, we demonstrate the stabilization of sub-60 nm diameter skyrmion at zero-field with adjustable skyrmion density. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2212_08920 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Densely packed skyrmions stabilized at zero magnetic field by indirect exchange coupling in multilayers Ajejas, Fernando Sassi, Yanis Legrand, William Srivastava, Titiksha Collin, Sophie Vecchiola, Aymeric Bouzehouane, Karim Reyren, Nicolas Cros, Vincent Materials Science Room-temperature stabilization of skyrmions in magnetic multilayered systems is the result of a fine balance between different magnetic interactions namely symmetric and antisymmetric exchange, dipolar, perpendicular magnetic anisotropy as well as, in most cases, Zeeman through an applied external field. Such field-driven stabilization approach is not compatible with most of the anticipated skyrmion based applications, e.g. skyrmion memories, logic or neuromorphic computing which motivates a reduction or a cancellation of field requirements. Here we present a method to stabilize at room-temperature and zero-field, a densely packed skyrmion phase in ferromagnetic multilayers with moderate number of repetitions. To this aim, we finely tune the multilayer parameters to stabilize a dense skyrmion phase. Then, relying on the interlayer electronic coupling to an adjacent bias magnetic layer with strong perpendicular magnetic anisotropy and uniform magnetization, we demonstrate the stabilization of sub-60 nm diameter skyrmion at zero-field with adjustable skyrmion density. |
| title | Densely packed skyrmions stabilized at zero magnetic field by indirect exchange coupling in multilayers |
| topic | Materials Science |
| url | https://arxiv.org/abs/2212.08920 |