Extended Data Fig. 5
SEM images of the sidewall cross-section of the 400 μm-thick nickel spinel ferrite used in the topological isolator, exhibiting micron-scale grain sizes.
Extended Data Fig. 5 | Nature Photonics
SEM images of the sidewall cross-section of the 400 μm-thick nickel spinel ferrite used in the topological isolator, exhibiting micron-scale grain sizes.
