Topological Surface-Dominated Spintronic THz Emission in Topologically Nontrivial Bi_{1- x} Sb_x Films.

ABSTRACT: Topological materials have significant potential for spintronic applications owing to their superior spin-charge interconversion. Here, the spin-to-charge conversion (SCC) characteristics of epitaxial Bi_{1- x} Sb_x films is investigated across the topological phase transition by spintronic terahertz (THz) spectroscopy. An unexpected, intense spintronic THz emission is observed in the topologically nontrivial semimetal Bi_{1- x} Sb_x films, significantly greater than that of Pt and Bi₂ Se₃ , which indicates the potential of Bi_{1- x} Sb_x for spintronic applications. More importantly, the topological surface state (TSS) is observed to significantly contribute to SCC, despite the coe

SUBMITTER: Park H 

PROVIDER: S-EPMC9313944 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature