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Altermagnets (A$\ell$Ms) constitute a novel family of magnetic materials characterized by the absence of net magnetization and the presence of spin-polarized band structures. Whereas A$\ell$M phases were initially proposed in collinear…

Materials Science · Physics 2026-03-03 Mengli Hu , Mikel I. Iraola , Paul McClarty , Jeroen van den Brink , Maia G. Vergniory

Multiferroic altermagnets offer new opportunities for magnetoelectric coupling and electrically tunable spintronics. However, due to intrinsic symmetry conflicts between altermagnetism and ferroelectricity, achieving their coexistence,…

Materials Science · Physics 2025-05-27 Ziye Zhu , Xunkai Duan , Jiayong Zhang , Bowen Hao , Igor Zutic , Tong Zhou

I present a tensorial approach to the description of $\vec{k}/-\vec{k}$-symmetric, time-reversal-odd splitting of electronic bands in magnetic materials, which can be of non-relativistic origin and was recently given the name of…

Strongly Correlated Electrons · Physics 2024-08-22 Paolo G. Radaelli

Considering the similarity of the real-space configurations for the opposite spin sublattices in both antiferromagnets (AFM) and altermagnets (AM), the relationship between them should be profound. In this work, we demonstrate that AFM and…

Materials Science · Physics 2025-10-16 P. Zhou , X. N. Peng , Y. Z. Hu , B. R. Pan , S. M. Liu , Pengbo Lyu , L. Z. Sun

Altermagnetism is a new magnetic phase with k-dependent spin polarization and may exist in an insulating state with a high N\'eel temperature. This provides a new opportunity to obtain both spin and electric polarization in one material.…

Materials Science · Physics 2023-12-22 Peng-Jie Guo , Yuhao Gu , Ze-Feng Gao , Zhong-Yi Lu

Altermagnetism, a novel magnetic phase bridging ferromagnetism and antiferromagnetism, exhibits zero net magnetization due to its unique alternating spin arrangements, which cancel out macroscopic magnetization. This phase is characterized…

Materials Science · Physics 2024-09-20 Meysam Bagheri Tagani

Altermagnets (AMs) are an emergent class of magnetic materials that combine properties of ferromagnets and antiferromagnets, exhibiting spin-polarized Fermi surfaces and zero net magnetic moment due to combined time-reversal and crystal…

Mesoscale and Nanoscale Physics · Physics 2025-10-01 Zesen Fu , Mengli Hu , Aolin Li , Haiming Duan , Junwei Liu , Fangping Ouyang

We revise existing group-theoretical approaches for a treatment of nonrelativistic collinear magnetic systems with perfect translation invariance. We show that full symmetry groups of these systems, which contain elements with independent…

Materials Science · Physics 2022-09-30 Ilja Turek

The altermagnetism can achieve spin-split bands in collinear symmetry-compensated antiferromagnets. Here, we predict altermagnetic order in Janus monolayer $\mathrm{Cr_2SO}$ with eliminated inversion symmetry, which can realize the…

Materials Science · Physics 2023-06-08 San-Dong Guo , Xiao-Shu Guo , Kai Cheng , Ke Wang , Yee Sin Ang

The long fascination antiferromagnetic materials have exerted on the scientific community over about a century has been entirely renewed recently with the discovery of several unexpected phenomena including various classes of anomalous spin…

Mesoscale and Nanoscale Physics · Physics 2021-11-17 V. Bonbien , Fengjun Zhuo , A. Salimath , O. Ly , A. Abbout , A. Manchon

It is commonly believed that in typical collinear antiferromagnets, with no net magnetization, the energy bands are spin-(Kramers-degenerate. The opposite case is usually associated with a global time-reversal symmetry breaking (e.g., via…

Materials Science · Physics 2021-11-24 I. I. Mazin , K. Koepernik , M. D. Johannes , Rafael González-Hernández , Libor Šmejkal

Antiferromagnets naturally exhibit three obvious advantages over ferromagnets for memory device applications: insensitivity to external magnetic fields, much faster spin dynamics (~THz) and higher packing density due to the absence of any…

Mesoscale and Nanoscale Physics · Physics 2019-03-15 Zhiqi Liu , Zexin Feng , Han Yan , Xiaoning Wang , Xiaorong Zhou , Peixin Qin , Huixin Guo , Ronghai Yu , Chengbao Jiang

Altermagnetism, as a newly identified form of unconventional antiferromagnetism, enables the removal of spin degeneracy in the absence of net magnetization that provides a platform for the low power consumption and ultra-fast device…

Materials Science · Physics 2025-02-26 Wei Xun , Xin Liu , Youdong Zhang , Yin-Zhong Wu , Ping Li

Altermagnetism, a kind of collinear magnetism that is characterized by a momentum-dependent band and spin splitting without net magnetization, has recently attracted considerable interest. Finding altermagnetic materials with large…

Altermagnetic materials, with real-space antiferromagnetic arrangement and reciprocal-space anisotropic spin splitting, have attracted much attention. However, the spin splitting is small in most altermagnetic materials, which is a…

Materials Science · Physics 2025-02-26 Peng-Jie Guo , Xiao-Yao Hou , Ze-Feng Gao , Huan-Cheng Yang , Wei Ji , Zhong-Yi Lu

Emerging altermagnetic materials with vanishing net magnetizations and unique band structures have been envisioned as an ideal electrode to design antiferromagnetic tunnel junctions. Their momentum-resolved spin splitting in band structures…

Materials Science · Physics 2024-03-21 Boyuan Chi , Leina Jiang , Yu Zhu , Guoqiang Yu , Caihua Wan , Jia Zhang , Xiufeng Han

Altermagnetism is a subclass of antiferromagnetism that features spin-polarized electron bands of a non-relativistic origin despite the absence of a net magnetiation in the material. We here theoretically study spin pumping from an…

Mesoscale and Nanoscale Physics · Physics 2024-06-13 Erik Wegner Hodt , Jacob Linder

Hidden spin polarization (HSP) with zero net spin polarization in total but non-zero local spin polarization has been proposed in certain nonmagnetic centrosymmetric compounds, where the individual sectors forming the inversion partners are…

Materials Science · Physics 2025-08-28 San-Dong Guo

Symmetry protected topology has been studied extensively in the past twenty years, but the topology protected by spin symmetry has just begun to be studied. In this work, based on spin symmetry analysis, we propose that a class of Weyl…

Materials Science · Physics 2025-06-04 Shuai Qu , Xiao-Yao Hou , Zheng-Xin Liu , Peng-Jie Guo , Zhong-Yi Lu

Recent years have seen a proliferation in investigations on Altermagnetism due to its exciting prospects both from an applications perspective and theoretical standpoint. Traditionally, altermagnets are distinguished from collinear…

Materials Science · Physics 2025-12-30 Chanchal K. Barman , Bishal Das , Alessio Filippetti , Aftab Alam , Fabio Bernardini