Effect of Nb concentration on the spin-orbit coupling strength in Nb-doped SrTiO₃ epitaxial thin films.

ABSTRACT: Several oxide materials have attracted much interest for the application in spintronic devices due to unusual properties originating from the strongly correlated orbital and spin degrees of freedom. One missing part in oxide spintronics is a good spin channel featured by strong spin-orbit coupling (SOC) which enables an efficient control of the electron's spin. We have systematically investigated the dependence of the SOC strength of Sr(Nb _x Ti_1-x)O₃ thin films on Nb concentration (n_Nb = 2~20 at. %) as a deeper exploration of a recent finding of the strong SOC in a heavily Nb-doped SrTiO₃ (Sr(Nb_0.2Ti_0.8)O₃) epitaxial film. Apart from a finding of a proportionality of the SOC to n_Nb, we have o

SUBMITTER: Cho SW 

PROVIDER: S-EPMC5893625 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature