(a) A single Abrikosov vortex map, (b) a series of d I / d V spectra measured along the dotted line in panel (a). (c)–(e) False color plots of the spectra. The data were measured for a 1-QL Bi₂Te₃/NbSe₂ sample, showing an inverse V-like shape splitting of the zero bias peak. However, in both the 3-QL and 5-QL samples, inverse Y-shaped splitting behaviors are observed, which indicates the existent of a Majorana zero mode. All panels are reproduced from Ref. [122].