Fig. 2: Quasi-periodic conductance modulations in the form of stripes in 4Hb-TaS2.
a Distance and angular distributions of the stripes show a stripe separation with a median Pc = 19.6 nm and a clear orientation, roughly parallel to the crystal’s a-axis. b Differential conductance maps of the same field of view were measured at E = −140 meV (top), where the stripes are clearly seen, and at E = 160 meV (bottom), where the stripes are invisible. The absence of stripes at different energies shows that they are not simply a topographic modulation. c Spatially averaged dI/dV profiles measured on and off stripe, at 4 K. Inset: Low-bias differential conductance spectra measured at 0.4 K on and off stripe. The superconducting gap is unchanged, meaning the superconductivity is homogeneous throughout the sample.
