Topological insulators and superconductors
Topological insulators are new states of quantum matter which cannot be adiabatically
connected to conventional insulators and semiconductors. They are characterized by a full …
connected to conventional insulators and semiconductors. They are characterized by a full …
Odd-frequency superconducting pairing in one-dimensional systems
Odd-frequency superconductivity represents a truly unconventional ordered state which, in
contrast to conventional superconductivity, exhibits pair correlations which are odd in …
contrast to conventional superconductivity, exhibits pair correlations which are odd in …
Ballistic edge states in Bismuth nanowires revealed by SQUID interferometry
The protection against backscattering provided by topology is a striking property. In two-
dimensional insulators, a consequence of this topological protection is the ballistic nature of …
dimensional insulators, a consequence of this topological protection is the ballistic nature of …
Andreev Reflection of Helical Edge Modes in Quantum Spin Hall Insulator
I Knez, RR Du, G Sullivan - Physical review letters, 2012 - APS
We present an experimental study of SNS junctions, with N being a quantum spin Hall
insulator made of InAs/GaSb. A front gate is used to vary the Fermi level into the minigap …
insulator made of InAs/GaSb. A front gate is used to vary the Fermi level into the minigap …
Current–Phase Relation of a WTe2 Josephson Junction
M Endres, A Kononov, HS Arachchige, J Yan… - Nano Letters, 2023 - ACS Publications
When a topological insulator is incorporated into a Josephson junction, the system is
predicted to reveal the fractional Josephson effect with a 4π-periodic current–phase relation …
predicted to reveal the fractional Josephson effect with a 4π-periodic current–phase relation …
Odd-frequency superconducting pairing and subgap density of states at the edge of a two-dimensional topological insulator without magnetism
We investigate the emergence and consequences of odd-frequency spin-triplet s-wave
pairing in superconducting hybrid junctions at the edge of a two-dimensional topological …
pairing in superconducting hybrid junctions at the edge of a two-dimensional topological …
Perfect Andreev reflection due to the Klein paradox in a topological superconducting state
In 1928, Dirac proposed a wave equation to describe relativistic electrons. Shortly
afterwards, Klein solved a simple potential step problem for the Dirac equation and …
afterwards, Klein solved a simple potential step problem for the Dirac equation and …
Odd-frequency triplet superconductivity at the helical edge of a topological insulator
Nonlocal pairing processes at the edge of a two-dimensional topological insulator in
proximity to an s-wave superconductor are usually suppressed by helicity. However, the …
proximity to an s-wave superconductor are usually suppressed by helicity. However, the …
Phase-tunable electron transport assisted by odd-frequency Cooper pairs in topological Josephson junctions
We consider a finite-size topological Josephson junction formed at the edge of a two-
dimensional topological insulator in proximity to conventional superconductors and study …
dimensional topological insulator in proximity to conventional superconductors and study …
Spin‐helical transport in normal and superconducting topological insulators
In a topological insulator (TI) the character of electron transport varies from insulating in the
interior of the material to metallic near its surface. Unlike, however, ordinary metals …
interior of the material to metallic near its surface. Unlike, however, ordinary metals …