Extended Data Fig. 4: Hybridized orbital states under an elliptical confinement with dr′ = 0.08.
From: Orbital hybridization in graphene-based artificial atoms
a. A STM image (Vb = 450 mV, I = 300 pA) of the elliptical QD with anisotropy degree \({{dr}}^{{\prime} }=\,0.08\) embedded in the graphene/WSe2 heterostructure. The minor radius r1 is approximately 6 nm, and the major radius r2 is approximately 7 nm. The height profile along the red dashed line is shown with solid red line. b. The \(-{d}^{3}I/{{dV}}^{3}\) spectroscopic maps versus the spatial position along the major axis (left panel) and minor axis (right panel) of the elliptical QD, respectively. Orbital states can be clearly observed in the QD. The first four states are labelled by wavefunctions and black dashed lines in the right panel. The yellow dashed lines mark the size of the QD.
