Stereoscopic photographs of atomic arrangements in MoS2 single-crystal

Taking advantage of the circular dichroism in photoelectron angular distribution (PEAD), stereoscopic photographs of atomic arrangements can be obtained directly by using two-dimensional display-type spherical mirror analyzer (DIANA) and circularly polarized lights. By measuring the PEAD patterns from different core levels, the stereoscopic photographs of atomic arrangements surrounding two kinds of atoms Mo and S in MoS2 single-crystal were taken separately. The stereoscopic photographs show us the same hexagonal arrangements resulting from the unique sandwich and the long interlayer structure. The element selective stereo-photography has been confirmed to be efficient not only for single element crystals, but also for compound crystals