凝聚态物理
铁磁性
挫折感
居里温度
材料科学
解耦(概率)
交换互动
物理
控制工程
工程类
作者
Francesco Cugini,Simone Chicco,Fabio Orlandi,G. Allodi,Pietro Bonfà,V. Vezzoni,Olga N. Miroshkina,Markus E. Gruner,Lara Righi,S. Fabbrici,F. Albertini,R. De Renzi,M. Solzi
出处
期刊:Physical review
日期:2022-05-26
卷期号:105 (17)
被引量:9
标识
DOI:10.1103/physrevb.105.174434
摘要
Magnetic frustration in ferromagnetic metallic systems is unusual due to the long-range and symmetric nature of the exchange interactions. In this work we prove that it is possible to obtain a highly frustrated ferromagnetic phase in a multi-sublattices cubic structure through a fine tuning of the magnetic interactions. This peculiar state is achieved in Ni-Mn-(In, Sn) Heusler alloys and results in the effective decoupling of their two intertwined ferromagnetic sublattices. One sublattice is ferromagnetic long range ordered below the macroscopic Curie temperature (TC ) whereas the second one remains disordered until a crossover to a polarized state occurs at T << TC . This result points out that a fine engineering of the magnetic interactions in metallic systems can lead to interesting novel and emergent phenomena.
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