Abstract:

　　Altermagnets, combining the strengths of ferromagnets and antiferromagnets, have emerged as an exciting platform for next-generation spintronic applications. Integrating (anti)ferroelectricity with altermagnetism results in multiferroic altermagnets, enabling precise manipulation of spin states through electric control of crystal symmetry. In this talk, I will introduce three distinct classes of such multiferroics, tailored for diverse functionalities: antiferroelectric altermagnets [1], ferroelectric altermagnets [2], and noncollinear ferroelectric altermagnets [3], where electric polarization serves as a powerful handle to switch spin splitting on and off, and even to reverse its sign. Our approach combines symmetry analysis and effective models to establish a universal design framework, which we validate through first-principles calculations across diverse material platforms, including van der Waals materials, perovskite oxides, and metal-organic frameworks. These results not only deepen the understanding of magnetoelectric coupling but also open new pathways toward electrically controlled spintronic devices.

[1] X. Duan, J. Zhang, and T. Zhou* et al, PRL 134, 106801 (2025).

[2] Z. Zhu, X. Duan, and T. Zhou* et al, arXiv:2504.06258.

[3] Z. Zhu, Y. Liu, and T. Zhou* et al, unpublished.

报告人简介：

　　周通，宁波东方理工大学理学部副教授（研究员、博导），上海交通大学、中国科学技术大学兼职博导；入选国家级高层次人才、浙江省杰青，主持国家自然科学基金委面上、甬江人才工程青年创新人才等项目。2017年博士毕业于复旦大学，之后在美国纽约州立大学布法罗分校历任博士后研究员、研究科学家、研究助理教授，2023年加入东方理工。目前主要从事量子计算、量子材料与自旋电子学等研究，已发表SCI论文60余篇，其中一作/通讯作者论文18篇，包括Phys. Rev. Lett. (4篇), Nat. Mater. (1篇), Nat. Commun. (1篇)等，研究成果入选PRL Editors’ Suggestion, 并得到Physics, Phys.org等专题报道; 论文学术引用3200余次，H-index 27；多次受邀在APS March Meeting, SPIE, WINDS等国际知名学术会议上做邀请报告。

个人主页：https://www.eitech.edu.cn/?tid=90&p=teacher