MIT Team Electrically Controls Magnetism in Graphene
Scientists have made a groundbreaking discovery in the field of graphene research. They have successfully demonstrated electrical control of magnetism in rhombohedral hexalayer graphene, a significant advancement in the study of two-dimensional materials.
The team, led by researchers at the Massachusetts Institute of Technology, observed switchable magnetic order and a measurable electrical response in the material. Notably, they found that the anomalous Hall resistance changes with both the number of charge carriers and the electric displacement field. This means that the magnetism in rhombohedral graphene arises from its inherent electronic structure, not external influences.
The team mapped the transverse resistance as a function of carrier density and electric displacement field, revealing a competition between distinct magnetic ground states under small magnetic fields. They also achieved non-volatile and hysteretic anomalous Hall resistance in the material, demonstrating the potential for practical applications.
This study marks a significant step forward in understanding and manipulating magnetism in graphene. The team's ability to electrically toggle the anomalous Hall resistance opens up new possibilities for future technologies. Further research is needed to fully explore the implications of this discovery, with leading institutions such as the University of Manchester and the Max Planck Institute for Solid State Research likely to be at the forefront of these efforts.
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