近日，清华大学的于荣教授及其研究小组取得一项新进展。经过不懈努力，他们实现基于相位检索的反铁磁成像。相关研究成果已于2023年12月23日在国际知名学术期刊《科学通报》上发表。

据悉，反铁磁成像在理解和优化反铁磁材料和器件的性能方面具有重要意义。尽管高能电子在原子尺度成像中得到了广泛应用，但它们对自旋织构的灵敏度较低。通常，磁场对高能电子波相位的贡献远小于静电势的百分之一。

附：英文原文

Title: Antiferromagnetic imaging via ptychographic phase retrieval

Author: Jizhe Cui, Haozhi Sha, Wenfeng Yang, Rong Yu

Issue&Volume: 2023/12/23

Abstract: Antiferromagnetic imaging is critical for understanding and optimizing the properties of antiferromagnetic materials and devices. Despite the widespread use of high-energy electrons for atomic-scale imaging, they have low sensitivity to spin textures. Typically, the magnetic contribution to the phase of a high-energy electron wave is weaker than one percent of the electrostatic potential. Here, we demonstrate direct imaging of antiferromagnetic lattice through precise phase retrieval via electron ptychography, paving the way for magnetic lattice imaging of antiferromagnetic materials and devices.

DOI: 10.1016/j.scib.2023.12.044

Source: https://www.sciencedirect.com/science/article/pii/S209592732300916