Missing Shapiro steps in topologically trivial Josephson junction on InAs quantum well

@article{Dartiailh2021MissingSS,
  title={Missing Shapiro steps in topologically trivial Josephson junction on InAs quantum well},
  author={Matthieu C. Dartiailh and Joseph Cuozzo and Bassel Heiba Elfeky and William Mayer and Joseph Yuan and Kaushini S. Wickramasinghe and Enrico Rossi and Javad Shabani},
  journal={Nature Communications},
  year={2021},
  volume={12}
}
Josephson junctions hosting Majorana fermions have been predicted to exhibit a 4 π periodic current phase relation. One experimental consequence of this periodicity is the disappearance of odd steps in Shapiro steps experiments. Experimentally, missing odd Shapiro steps have been observed in a number of materials systems with strong spin-orbit coupling and have been interpreted in the context of topological superconductivity. Here we report on missing odd steps in topologically trivial… 

Figures and Tables from this paper

Model for missing Shapiro steps due to bias-dependent resistance
Majorana zero modes are predicted in several solid state systems such as hybrid superconductorsemiconductor structures and topological insulators coupled to superconductors. One of the expected
Experimental review on Majorana zero-modes in hybrid nanowires
As the condensed matter analog of Majorana fermion, the Majorana zero-mode is well known as a building block of fault-tolerant topological quantum computing. This review focuses on the recent
Fractional Shapiro steps without fractional Josephson effect
It is widely believed that superconducting junctions involving topological insulators and hosting Majorana-like bound states may exhibit unusual ”fractional” (4π-periodic) ac Josephson effect.
Josephson Inductance as a Probe for Highly Ballistic Semiconductor-Superconductor Weak Links.
TLDR
The method allows us to probe the devices deeply in the nondissipative regime, where ordinary transport measurements are featureless, and the signature of supercurrent interference in the inductance turns out to be extremely sensitive to τ[over ¯].
Local Control of Supercurrent Density in Epitaxial Planar Josephson Junctions.
TLDR
It is demonstrated that not only can the junction width be electrostatically defined but also the current profile can be locally adjusted to form superconducting quantum interference devices.
Novel realization of superconducting topological-insulator nanowires
When a topological insulator (TI) is made into a nanowire, the interplay between topology and size quantization gives rise to peculiar one-dimensional (1D) states whose energy dispersion can be
Opportunities in topological insulator devices
Topological insulators (TIs) are expected to be a promising platform for novel quantum phenomena, whose experimental realizations require sophisticated devices. In this Technical Review, we discuss
The main problems of using biomass as a fuel
The article discusses the main problems of the using of biomass as a fuel, including the fuel use of biomass as an innovative way to generate clean energy. It is shown that according to the
Topological superconductivity in spin-orbit-coupled semiconducting nanowires
Abstract We present a pedagogical review of topological superconductivity and its consequences in spin-orbit-coupled semiconductor/superconductor heterostructures. We start by reviewing the

References

SHOWING 1-10 OF 108 REFERENCES
"J."
however (for it was the literal soul of the life of the Redeemer, John xv. io), is the peculiar token of fellowship with the Redeemer. That love to God (what is meant here is not God’s love to men)
APPL
Statistical packages have been used for decades to analyze large datasets or to perform mathematically intractable statistical methods. These packages are not capable of working with random variables
[C]
d.
TLDR
The novel JEV RT-NASBA assay could be used as an efficient molecular biology tool to diagnose JEV, which would facilitate the surveillance of reproductive failure disease in swine and would be beneficial for public health security.
‘K’
  • P. Alam
  • Composites Engineering: An A–Z Guide
  • 2021
‘N’
  • P. Alam
  • Composites Engineering: An A–Z Guide
  • 2021
‘R’
  • P. Alam
  • Composites Engineering: An A–Z Guide
  • 2021
  • Nat. Commun.
  • 2020
Gate controlled anomalous phase shift in Al/InAs Josephson junctions
TLDR
By gate controlling the density of InAs, the authors are able to tune the spin–orbit coupling in the Josephson junction, which gives them the ability to tuning the anomalous phase, and opens new opportunities for superconducting spintronics, and new possibilities for realizing and characterizing topological superconductivity.
Giant fractional Shapiro steps in anisotropic Josephson junction arrays
Giant fractional Shapiro steps have been observed in Josephson junction arrays as resulting from magnetic flux quantization in the two-dimensional array. We demonstrate experimentally the appearance
...
1
2
3
4
5
...