Giant supercurrent states in a superconductor-InAs/GaSb-superconductor junction
arXiv:1410.7342 · doi:10.1063/1.4932644
Abstract
Superconductivity in topological materials has attracted a great deal of interest in both electron physics and material sciences since the theoretical predictions that Majorana fermions can be realized in topological superconductors [1-4]. Topological superconductivity could be realized in a type II, band-inverted, InAs/GaSb quantum well if it is in proximity to a conventional superconductor. Here we report observations of the proximity effect induced giant supercurrent states in an InAs/GaSb bilayer system that is sandwiched between two superconducting tantalum electrodes to form a superconductor-InAs/GaSb-superconductor junction. Electron transport results show that the supercurrent states can be preserved in a surprisingly large temperature-magnetic field (T-H) parameter space. In addition, the evolution of differential resistance in T and H reveals an interesting superconducting gap structure.
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Cited by in corpus (12)
- In-plane Zeeman field induced Majorana corner and hinge modes in an -wave superconductor heterostructure
- π and 4π Josephson Effects Mediated by a Dirac Semimetal
- Detection of Majorana Kramers pairs using a quantum point contact
- Single-edge transport in an InAs/GaSb quantum spin Hall insulator
- Microwave-Tunable Diode Effect in Asymmetric SQUIDs with Topological Josephson Junctions
- Probing the semiconductor to semimetal transition in InAs/GaSb double quantum wells by magneto-infrared spectroscopy
- Topological Majorana Two-Channel Kondo Effect
- Giant supercurrent states in a superconductor-InAs/GaSb-superconductor junction
- Proximity-induced superconducting gap in the intrinsic magnetic topological insulator MnBi2Te4
- Time reversal symmetry breaking and zero magnetic field Josephson diode effect in Dirac semimetal Cd3As2-mediated asymmetric SQUIDs
- Interlayer current near the edge of an InAs/GaSb double quantum well in proximity with a superconductor
- Buried Dirac points in quantum spin Hall insulators: Implications for Majorana Kramers pair-based quantum computing