Enhancement of spin-orbit coupling in Dirac semimetal Cd${}_3$As${}_2$ films by Sb-doping

Abstract

We present a study on magnetotransport in films of the topological Dirac semimetal Cd${}_3$As${}_2$ doped with Sb grown by molecular beam epitaxy. In our weak antilocalization analysis, we find a significant enhancement of the spin-orbit scattering rate, indicating that Sb doping leads to a strong increase of the pristine band-inversion energy. We discuss possible origins of this large enhancement by comparing Sb-doped Cd${}_3$As${}_2$ with other compound semiconductors. Sb-doped Cd${}_3$As${}_2$ will be a suitable system for further investigations and functionalization of topological Dirac semimetals.

arXiv comment16 pages, 4 figures

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Cited by in corpus (4)

• Evidence of decoupling of surface and bulk states in Dirac semimetal $C{d}_{3}A{s}_2$
• Berry curvature derived negative magnetoconductivity observed in type-II magnetic Weyl semimetal films
• Spin-orbit interactions may relax the rigid conditions leading to flat bands
• Material realization of spinless, covalent-type Dirac semimetals in three dimensions