Phase-sensitive SQUIDs based on the 3D topological insulator HgTe

Abstract

Three-dimensional topological insulators represent a new class of materials in which transport is governed by Dirac surface states while the bulk remains insulating. Due to helical spin polarization of the surface states, the coupling of a 3D topological insulator to a nearby superconductor is expected to generate unconventional proximity induced $p$-wave superconductivity. We report here on the development and measurements of SQUIDs on the surface of strained HgTe, a 3D topological insulator, as a potential tool to investigate this effect.

5 pages, 4 figures, contribution to the Nobel Symposium 156: New forms of matter: topological insulators and superconductors

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Cited by in corpus (7)

• $4\pi$-periodic Josephson supercurrent in HgTe-based topological Josephson junctions
• Reducing electronic transport dimension to topological hinge states by increasing geometry size of Dirac semimetal Josephson junctions
• Proximity-induced superconductivity and quantum interference in topological crystalline insulator SnTe thin film devices
• Microwave studies of the fractional Josephson effect in HgTe-based Josephson junctions
• Terahertz photoresistivity of a high-mobility 3D topological insulator based on a strained HgTe film
• Majorana phi0 Junction in a Disordered Spin-orbit Coupling Nanowire with Tilted Magnetic Field
• Integration of graphene-based superconducting quantum circuits in 3D cavity