2017/04/03 by L. W. van Heeringen, A. McCollam, G. A. de Wijs +1
Materials Science · Physics and Astronomy · #Asymmetry #Atomic and Subatomic Physics Research #Brillouin zone #Computer science #Condensed matter physics #Electronic and Structural Properties of Oxides #Heterojunction #Interpretation (philosophy) #Magnetic and transport properties of perovskites and related materials #Physics #Quantum mechanics #Semiconductor #Spin (aerodynamics) #Thermodynamics #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.95.155134
Paper (4 figures) and supplementary material (2 figures)
arxiv created 2017/04/03 · openalex publication_date 2017/04/19 · openalex created_date 2017/04/28 · arxiv updated 2017/05/24 · openalex updated_date 2026/08/05
Rashba spin splitting in two-dimensional (2D) semiconductor systems is generally calculated in a k\ifmmode⋅\else\textperiodcentered\fip Luttinger-Kohn approach where the spin splitting due to asymmetry emerges naturally from the bulk band structure. In recent years, several new classes of 2D systems have been discovered where electronic correlations are believed to have an important role. In these correlated systems, the effects of asymmetry leading to Rashba splitting have typically been treated phenomenologically. We compare these two approaches for the case of 2D electron systems in SrTiO3-based heterostructures, and find that the two models produce fundamentally different behavior in regions of the Brillouin zone that are particularly relevant for magnetotransport. Our results demonstrate the importance of identifying the correct approach in the quantitative interpretation of experimental data, and are likely to be relevant to a range of 2D systems in correlated materials.