Understanding spin-charge interconversion (SCI) in topological quantum materials, such as Dirac semimetals, is important for developing energy-efficient spintronic memory. This article reports room-temperature measurements of SCI at the interface between an archetypal semimetal (Cd${}_{3}$As${}_{2}$) and a metallic ferromagnet (Ni${}_{0.8}$Fe${}_{0.2}$). Analysis shows that can have efficiency ...

The nontrivial magnetic texture in real space gives rise to the intriguing phenomenon of topological Hall effect (THE), which is relatively less explored semimetals. Here, we report a large THE antiferromagnetic (AFM) state single crystals EuAgAs, an AFM Dirac semimetal. EuAgAs hosts ground below ${T}_{N}=12$ K with weak ferromagnetic component. in-plane isothermal magnetization ${T}_{N}$ exhib...

We propose a device in which sheet of graphene is coupled to Weyl semimetal, allowing for the physical access study tunneling from two- three-dimensional massless Dirac fermions. Because reconstructed band structure, we find that this acts as robust valley filter electrons sheet. show that, by appropriate alignment, semimetal draws away current one two valleys, while other pass unimpeded. In co...