Enhanced Stability of the Magnetic Skyrmion Lattice Phase under a Tilted Magnetic Field in a Two-Dimensional Chiral Magnet
| Autor: | Xuebing Zhao, Chao Wang, Mingliang Tian, Chiming Jin, Yuheng Zhang, Haifeng Du, Renchao Che |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Spintronics Condensed matter physics Mechanical Engineering Skyrmion Lorentz transformation Bioengineering 02 engineering and technology General Chemistry Magnetic skyrmion 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Magnetic field symbols.namesake Magnet Lattice (order) 0103 physical sciences symbols Curie temperature General Materials Science 010306 general physics 0210 nano-technology |
| Zdroj: | Nano letters. 17(5) |
| ISSN: | 1530-6992 |
| Popis: | The magnetic skyrmion is a topologically stable vortex-like spin texture that offers great promise as information carriers for future spintronic devices. In a two-dimensional chiral magnet, it was generally considered that a tilted magnetic field is harmful to its formation and stability. Here we investigated the angular-dependent stability of magnetic skyrmions in FeGe nanosheets by using high-resolution Lorentz transmission electron microscopy (Lorentz TEM). Besides the theoretically predicted destruction of skyrmion lattice state by an oblique magnetic field as the temperature closes to its magnetic Curie temperature Tc ∼ 278 K, we also observed an unexpected reentry-like phenomenon at the moderate temperatures near the border between conical and skyrmion phase, Tt ∼ 240 K. This behavior is completely beyond the theoretical prediction in a conventional two-dimensional (2D) system. Instead, a three-dimensional (3D) model involving the competition between conical phase and skyrmions is likely to play a c... |
| Databáze: | OpenAIRE |
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