Fig. 1 | npj Quantum Materials

Fig. 1

From: Pressure-induced superconductivity and topological quantum phase transitions in a quasi-one-dimensional topological insulator: Bi4I4

Fig. 1

Crystal structures of β-Bi4I4. a Crystal structure of β-Bi4I4 viewed along the chain direction (lattice vector b = [010] projection). The red, green, and blue spheres represent the Bi1, Bi2, and I atoms, respectively. Solid lines indicate covalent bonds. b Atomic structure of an individual chain-like building block of β-Bi4I4. c HAADF-STEM image of β-Bi4I4 along the [010] zone and corresponding electron diffraction pattern

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