Deterministic reversal of single magnetic vortex circulation by an electric field
| Autor: | Zhang, Y, Wang, C, Huang, H, Lu, J, Liang, R, Liu, J, Peng, R, Zhang, Q, Wang, J, Gu, L, Han, XF, Chen, LQ, Ramesh, R, Nan, CW, Zhang, J |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Science bulletin, vol 65, iss 15 Science Bulletin, vol 65, iss 15 |
| Popis: | The ability to control magnetic vortex is critical for their potential applications in spintronic devices. Traditional methods including magnetic field, spin-polarized current etc. have been used to flip the core and/or reverse circulation of vortex. However, it is challenging for deterministic electric-field control of the single magnetic vortex textures with time-reversal broken symmetry and no planar magnetic anisotropy. Here it is reported that a deterministic reversal of single magnetic vortex circulation can be driven back and forth by a space-varying strain in multiferroic heterostructures, which is controlled by using a bi-axial pulsed electric field. Phase-field simulation reveals the mechanism of the emerging magnetoelastic energy with the space variation and visualizes the reversal pathway of the vortex. This deterministic electric-field control of the single magnetic vortex textures demonstrates a new approach to integrate the low-dimensional spin texture into the magnetoelectric thin film devices with low energy consumption. |
| Databáze: | OpenAIRE |
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