The research conducted by Prof. Zhu Ye, Associate Professor of the Department of Applied Physics was published in Nature reecently. The title of the research is "Intrinsic Polar Vortex Crystals in A-site Layer-ordered Perovskites." This paper reports the discovery of an exotic 2D polar topology spontaneously formed with a period down to 4 nm in a family of perovskite oxide materials, which can be potentially used for high-density data storage. The driving force giving rise to this novel topological phases is further revealed as the phonon exchange mechanism in complex oxides.
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