Fig. 3: Identifying the putative Majorana bound state in FeTe0.55Se0.45.
From: Single-electron charge transfer into putative Majorana and trivial modes in individual vortices
a Spatially resolved differential conductance around an individual vortex at the energy E = +Δt, where Δt and Δs stand for the superconducting gaps of the tip and sample, respectively. b High-resolution differential conductance spectra acquired at the two locations marked by the crosses in a: the center of the vortex core (red) and off vortex (blue). The red and blue dashed lines indicate the coherence peaks. c Differential conductance spectra along the dashed line (purple) in a showing the spatial extent of the zero-energy bound state. The gray dashed lines in b and c indicate the peaks at ±Δt, where tunneling into the putative Majorana bound state occurs. d–f Local density of states (DOS) plots corresponding to a–c, after deconvolution using the tip DOS. The putative Majorana bound state is indicated by the peak in the local DOS at zero energy (gray dashed line). b, e and c, f share the same horizontal axes. Setup conditions: a, c, Vset = 10 mV, Iset = 250 pA; b, Vset = 5 mV, Iset = 250 pA.
