Journal
PHYSICAL REVIEW B
Volume 105, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.105.174434
Keywords
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Funding
- TU-Darmstadt [1442, 20039]
- Deutsche Forschungsgemeinschaft (DFG) [TRR 270, 405553726, B06]
- ISCRAB [IsB20-PRISM]
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This research demonstrates that a highly frustrated ferromagnetic phase can be achieved in a multisublattices cubic structure by fine-tuning the magnetic interactions, showcasing the engineering potential of magnetic interactions in metallic systems.
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 multisublattices 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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