Abstract

LOREA, the ARPES endstation at ALBA Synchrotron in Spain, starts its service from October of 2021. It features a small beam spot size (10*10 μm2), a wide energy range (10-1000 eV) with all polarizations (LH, LV, C+, and C-), and the full-spin-resolution capability, which has been commissioned recently. The spin-ARPES at LOREA comprises one spin detector and the spin manipulator, which selects the spin component.

ZnTe is a zine-blend structure semiconductor with a wide range of electronic applications. Due to the lack of bulk inversion symmetry, the Dresselhaus-type spin-orbit coupling (SOC) has long been considered in these zine-blend structure semiconductors, such as ZnTe and GaAs. However, the experimental demonstration of this Dresselhaus SOC in the zine-blend semiconductors has been missing so far. Recently, taking advantage of the spin-ARPES at LOREA, we directly observed those spin-polarized bulk bands with large splitting energies in the non-magnetic ZnTe and fully characterized the spin texture.