Fig. 1: Sample configuration. | Communications Physics

Fig. 1: Sample configuration.

From: Interference, diffraction, and diode effects in superconducting array based on bismuth antimony telluride topological insulator

Fig. 1: Sample configuration.The alternative text for this image may have been generated using AI.

a Autocad-generated design file of the device. A square array of square Niobium islands is placed over the surface of a topological insulator epitaxial film, Bi0.8Sb1.2Te3 (BST). The blue color illustrates the Nb leads and the square Nb islands. The black color represents the BST film. The yellow color is where the BST film was milled off to expose the sapphire substrate underneath, thus creating trenches to isolate devices from each other. The bias current is applied horizontally between the I+ and I− leads and the magnetic field is oriented perpendicular to the surface of the sample. The voltage is probed on the V+ and V− contact pads. b An scanning electron microscope (SEM) image of the Nb array.

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