Abstract: Considering the lack of discussion of the crystalline energy band structure in real space in the commonly used solid-state physics textbooks, we take the one-dimensional periodic potential as an example to introduce how to obtain the energy band under any atomic-chain potential in the seminar teaching. Design of visualized experiments will help students to build a physical picture for band formation in solid-state systems. It is of great reference value for related condensed matter theory courses.

Key words: energy-band structure, solid-state physics, visualized numerical experiments