Fig. 1: Interfacial superconductivity in MBE-grown (Bi, Sb)2Te3/FeTe heterostructures. | Nature Communications

Fig. 1: Interfacial superconductivity in MBE-grown (Bi, Sb)2Te3/FeTe heterostructures.

From: Dirac-fermion-assisted interfacial superconductivity in epitaxial topological-insulator/iron-chalcogenide heterostructures

Fig. 1

a Schematic of the (Bi, Sb)2Te3/FeTe heterostructure. b Cross-sectional ADF-STEM image of the 8QL (Bi, Sb)2Te3/50UC FeTe grown on a heat-treated SrTiO3 (100) substrate. c Temperature dependence of the sheet longitudinal resistance R of 50UC FeTe (black), 8QL Bi2Te3/50UC FeTe (red), and 8QL Sb2Te3/50UC FeTe (blue) heterostructures. The hump feature in the black curve indicates that the Néel temperature TN of the 50UC FeTe film is ~54 K.

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