Superconducting Quantum Interference Devices Made of Sb-doped Bi2Se3 Topological Insulator Nanoribbons

Abstract

We report the fabrication and characterization of superconducting quantum interference devices (SQUIDs) made of Sb-doped Bi2Se3 topological insulator (TI) nanoribbon (NR) contacted with PbIn superconducting electrodes. When an external magnetic field was applied along the NR axis, the TI NR exhibited periodic magneto-conductance oscillations, the so-called Aharonov-Bohm oscillations, owing to one-dimensional subbands. Below the superconducting transition temperature of PbIn electrodes, we observed supercurrent flow through TI NR-based SQUID. The critical current periodically modulates with a magnetic field perpendicular to the SQUID loop, revealing that the periodicity corresponds to the superconducting flux quantum. Our experimental observations can be useful to explore Majorana bound states (MBS) in TI NR, promising for developing topological quantum information devices.

arXiv comment10 pages, 4 figures

References in corpus (27)

• Topological Insulators
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• New directions in the pursuit of Majorana fermions in solid state systems
• Search for Majorana fermions in superconductors
• Topological Surface States Protected From Backscattering by Chiral Spin Texture
• $4\pi$-periodic Josephson supercurrent in HgTe-based topological Josephson junctions
• Unconventional Josephson Effect in Hybrid Superconductor-Topological Insulator Devices
• Electrically tunable surface-to-bulk coherent coupling in topological insulator thin films
• Josephson supercurrent through a topological insulator surface state
• Gapless Andreev bound states in the quantum spin Hall insulator HgTe
• Majorana Fermions in Proximity-coupled Topological Insulator Nanowires
• Ultra-low carrier concentration and surface dominant transport in Sb-doped Bi2Se3 topological insulator nanoribbons
• Aharonov-Bohm oscillations in disordered topological insulator nanowires
• Strong Superconducting Proximity Effect in Pb-Bi2Te3 Hybrid Structures
• One-dimensional helical transport in topological insulator nanowire interferometers
• Magnetic field induced helical mode and topological transitions in a quasi-ballistic topological insulator nanoribbon with circumferentially quantized surface state sub-bands
• Evidence for an anomalous current phase relation in topological insulator Josephson junctions
• Gate-tuned Differentiation of Surface-conducting States in Bi1.5Sb0.5Te1.7Se1.3 Topological-insulator Thin Crystals
• Helical Luttinger liquid in topological insulator nanowires
• Observation of Supercurrent in PbIn-Graphene-PbIn Josephson Junction
• Influence of Topological Edge States on the Properties of Al/Bi2Se3/Al Hybrid Josephson Devices
• Experimental realization of SQUIDs with topological insulator junctions
• Quantum electronic transport of topological surface states in beta-Ag2Se nanowire
• Proximity-induced superconductivity and quantum interference in topological crystalline insulator SnTe thin film devices
• Very Strong Superconducting Proximity Effects in PbS Semiconductor Nanowires
• Quantum electrical transport properties of topological insulator Bi2Te3 nanowires
• Macroscopic Quantum Tunneling in Superconducting Junctions of β-Ag${}_2$Se Topological Insulator Nanowire

Cited by in corpus (4)

• Adjustable quantum interference oscillations in Sb-doped Bi2Se3 topological insulator nanoribbons
• Multiple Andreev reflections in topological insulator nanoribbons
• Current-phase relation of a short multi-mode Bi2Se3 topological insulator nanoribbon Josephson junction with ballistic transport modes
• Gate-Modulated Quantum Interference Oscillations in Sb-Doped Bi2Se3 Topological Insulator Nanoribbon