التفاصيل البيبلوغرافية
| العنوان: |
Real-space observation of ferroelectrically induced magnetic spin crystal in SrRuO3. |
| المؤلفون: |
Seddon, S. D., Dogaru, D. E., Holt, S. J. R., Rusu, D., Peters, J. J. P., Sanchez, A. M., Alexe, M. |
| المصدر: |
Nature Communications; 3/31/2021, Vol. 12 Issue 1, p1-7, 7p |
| مصطلحات موضوعية: |
MAGNETIC force microscopy, HALL effect, MAGNETIC fields, SCANNING tunneling microscopy, THIN films, CONDENSED matter physics, MAGNETIC crystals |
| مستخلص: |
Unusual features in the Hall Resistivity of thin film systems are frequently associated with whirling spin textures such as Skyrmions. A host of recent investigations of Hall Hysteresis loops in SrRuO3 heterostructures have provided conflicting evidence for different causes for such features. We have constructed an SrRuO3-PbTiO3 (Ferromagnetic – Ferroelectric) bilayer that exhibits features in the Hall Hysteresis previously attributed to a Topological Hall Effect, and Skyrmions. Here we show field dependent Magnetic Force Microscopy measurements throughout the key fields where the 'THE' presents, revealing the emergence to two periodic, chiral spin textures. The zero-field cycloidal phase, which then transforms into a 'double-q' incommensurate spin crystal appears over the appearance of the 'Topological-like' Hall effect region, and develop into a ferromagnetic switching regime as the sample reaches saturation, and the 'Topological-like' response diminishes. Scanning Tunnelling Electron Microscopy and Density Functional Theory is used to observe and analyse surface inversion symmetry breaking and confirm the role of an interfacial Dzyaloshinskii–Moriya interaction at the heart of the system. There is an ongoing debate in the origin of unusual bumps in the resistive Hall measurements in SrRuO3 systems. Here, the authors analyze surface inversion symmetry breaking and confirm the role of an interfacial Dzyaloshinskii–Moriya interaction at the heart of the system, revealing a magnetic spin crystal emergent across the unusual bumps. [ABSTRACT FROM AUTHOR] |
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