Fig. 1: Basic structural and transport properties.
From: Light-induced giant enhancement of nonreciprocal transport at KTaO3-based interfaces
a Schematic illustration of the crystal structure for the perovskite heterostructures of CZO/KTO. b STEM-HAADF image of CZO/KTO, overlapped with the atomic configuration. The scale bar is 1 nm. c STEM image and the corresponding EDX elemental mapping at the interface. The green box indicates the area where 2DEGs are located at the interface. The scale bar is 5 nm. d Temperature-dependent sheet resistance (Rs) of the CZO/KTO heterostructure. The upper inset shows the optical image of the Hall-bar device. The lower inset indicates the superconductivity observed at cryogenic temperature. e MR and Hall resistance (Rxy) with respect to the applied out-of-plane magnetic field at 5 K. f Temperature-dependent carrier density (ns) and mobility (μ) of the device without illumination.
