Altermagnetism: Fundamental Concepts, Experimental Discoveries, and Future Directions

초록

A new magnetic state, altermagnetism, has been theoretically proposed and recently experimentally verified, thereby opening new possibilities for magnetic research. Altermagnetism exhibits zero net magnetization, similar to conventional antiferromagnetism, but displays spin splitting in specific momentum k regions, akin to ferromagnetism. This review paper aims to explain the fundamental concepts of altermagnetism, spin group symmetry, and recent experimental discoveries, and it discusses potential applications and future research directions.

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