What is it about?
This work investugated how the composition (the amounts of cobalt, manganese, and gallium) affects the structure, magnetism, and how electrons move through the material (transport properties). The unique Weyl semimetal state of CMG is closely connected to how its atoms are arranged, showing sensitivity to the precise arrangement of atoms. Moreover, by manipulating the composition and structural order of CMG, there's potential to control both its magnetism and topological properties.
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Why is it important?
This work figures out how to control and manipulate the topological states in the magnetic Weyl semimetal films CoxMnGay using a so-called molecule beam epitaxy method. By engineering these states, scientists can potentially create materials with special electronic properties that could be useful for making new kinds of electronic devices. They're important for certain kinds of advanced electronics and computing.
Perspectives
This study gives valuable information about how to manipulate and control the special magnetic and topological properties of Weyl semimetals, which could be important for developing new technologies in the future. We anticipate that by carefully designing the structure and symmetry, purely electric manipulation of the topological ferromagnetic state in a single-layer CMG is expected to be achieved, greatly simplifing the structure of spintronic devices.
Lizhu Ren
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This page is a summary of: Engineering the topological states of Weyl ferromagnetic CoxMnGay films grown by molecular beam epitaxy, Applied Physics Letters, April 2024, American Institute of Physics,
DOI: 10.1063/5.0201711.
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