Strong Rashba parameter of two-dimensional electron gas at CaZrO₃/SrTiO₃ heterointerface.

ABSTRACT: We synthesized a CaZrO₃/SrTiO₃ oxide heterostructure, which can serve as an alternative to LaAlO₃/SrTiO₃, and confirmed the generation of 2-dimensional electron gas (2-DEG) at the heterointerface. We analyzed the electrical-transport properties of the 2-DEG to elucidate its intrinsic characteristics. Based on the magnetic field dependence of resistance at 2 K, which exhibited Weak Anti-localization (WAL) behaviors, the fitted Rashba parameter values were found to be about 12-15 × 10^-12 eV*m. These values are stronger than the previous reported Rashba parameters obtained from the 2-DEGs in other heterostructure systems and several layered 2D materials. The observed strong spin-orbit coupling (SOC) is attributed to the strong internal el

SUBMITTER: Kwon D 

PROVIDER: S-EPMC10517959 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature