Fig. 4: STM image and QPI pattern of the Fe-deposited ZrSiTe surface.

a Topographic STM image of a Fe-deposited ZiSiTe surface. The image size is 28 nm² × 28 nm², sample bias is 100 mV. The doping concentration of surface Fe atoms is estimated at about 0.23 at.%. b, c The zoom-in high-resolution images (4 nm² × 4 nm²) for a single Fe impurity were taken with +100 and +40 mV, respectively. d dI/dV image was taken simultaneously with the panel a with the bias voltage of +100 mV. e The corresponding Fourier transforms pattern. f dI/dV image taken simultaneously with the panel a with the bias voltage of +40 mV. g The corresponding Fourier transforms pattern. Note the Fourier transforms pattern in e, g are original without the symmetrized. The red square indicates the size of the first Brillouin zone. h Zoomed image of the yellow square region in FFT image of g. We use red and brown dashed curves to highlight the Fermi arcs. i Schematic drawing shows that each Dirac point located at X, splits into a pair of Weyl points (purple dots). Green Fermi arcs can be deducted directly from panel h. j The calculated band structure and Fermi contour (k) in the first BZ with two pairs of WPs, after 5 meV of the ZM splitting energy was added along the x-direction.