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چکیده
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In this work, we theoretically investigate the Andreev reflection in a junction comprising magnetic Weyl semimetal and superconductors. We show that in the presence of magnetization, Dirac semimetals convert to the magnetic Weyl, and the separation between Weyl nodes depends on the magnitude of magnetization. This conversion from Dirac to Weyl fermions has important implications for the electronic properties and transport phenomena in these materials. Our findings reveal that the Andreev reflection, which is a crucial process in superconductor based devices, depends on the incident angle of the incoming fermion. This angle-dependent Andreev reflection is a direct consequence of the unique electronic structure of the magnetic Weyl semimetal. Interestingly, we also discover that due to the reverse action between different nodes with different chirality, a transverse chirality current flows parallel to the interface if the magnetization has a component parallel to the junction's interface. This transverse chirality current has the potential to be utilized in spintronics applications. The theoretical insights provided in this work advance our understanding of the interplay between magnetism, topology, and superconductivity in Weyl semimetals. These findings pave the way for the design and development of novel superconducting devices and spintronic technologies based on magnetic Weyl semimetals.
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