Fig. 1

(a) Crystal structure of LaO0.5F0.5BiS2. VESTA24 was used to draw the crystal structures. (b) Temperature-dependent resistivity of LaO0.5F0.5Bi1−xPbxS2 (x = 0.10). (c) Illustration of photoelectron holography. When soft X-rays are incident on a sample, an emitter atom will absorb the photon and emit a photoelectron as a spherical wave. A part of the photoelectron wave is scattered by the surrounding atoms (scatterers). The interference between the direct photoelectron wave and the scattered photoelectron waves forms a photoelectron hologram.