Tunneling spectra of Ti/LaAlO3/KTaO3 planar junctions. (IMAGE)
Caption
(a) Schematic illustration of a Ti/LaAlO3/KTaO3 device. (b) Tunneling spectra of a device with a weak tunneling barrier at T = 0.5 K under different gate voltages. Inset: Zoom in on the left peaks. (c) Tunneling spectrum of a device with a strong tunneling barrier at T = 0.5 K, plotted as black circles. (d-f) Calculated tunneling spectra (blue lines, normalized by the normal state value of the two-dimensional electron system) for strong metal-superconductor coupling, corresponding to s-wave, chiral p-wave and dxy-wave superconductors, respectively. For comparison, the normalized density of states (DOS) for each pristine superconducting state is also plotted (black dashed lines).
Credit
©Science China Press
Usage Restrictions
Use with credit.
License
Original content