Emergent topological spin structures in the centrosymmetric cubic perovskite<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>SrFeO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>
Shintaro Ishiwata, Taro Nakajima, J.-H. Kim, D. S. Inosov, Naoya Kanazawa, J. S. White, J. L. Gavilano, R. Georgii, K. Seemann, Georg Brandl, Pascal Manuel, D. D. Khalyavin, S. Seki, Y. Tokunaga, Masataka Kinoshita, Youwen Long, Y. Kaneko, Y. Taguchi, T. Arima, B. Keimer, Yoshinori Tokura
Abstract
The authors unveil topological spin structures composed of skyrmion strings in a cubic centrosymmetric iron oxide that provides the missing experimental link between centrosymmetric lattices and a rich variety of helimagnetic order. This is the first observation of a three-dimensional topological spin texture in a bulk perovskite-type oxide, one of the most ubiquitous and important systems for oxide electronics. The study enlarges the family of topological spin textures and offers a promising route toward the design of novel oxide skyrmionics.