Enhanced and tunable Goos-Hänchen shift of reflected light due to Tamm surface plasmons with Dirac semimetals

•Enhanced and tunable Goos-Hänchen shift of reflected light based on Tamm surface plasmons in three-dimensional Dirac semimetals, spacer layer and one-dimensional photonic crystal composite multilayer structure.•The Goos-Hänchen shift can be dynamically adjusted by appropriately changing the Fermi energy of BDS or controlling the structural parameters of the composite multilayer structure.•The Goos-Hänchen shift of Tamm surface plasmons in one-dimensional photonic crystal composite structure based on three-dimensional Dirac semimetals provides a new idea for the design of optical shift devices.