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SQEL at “Highlights in Nanoscience”

Our group leader, Dr. F. Giazotto, while presenting the SQEL works at the NEST Conference 2019 “Highlights in Nanoscience”.

The SQEL group attended the 2019 NEST annual meeting “Highlights in Nanoscience” with a talk by our group leader Dr. F. Giazotto and two poster presentations.

The main goal of the conference, which has been co-organized by Dr. E. Strambini of SQEL, was to display, share and discuss the most recent activities of the NEST laboratory where we are located.

The two poster contributions of our group were “Field-effect metallic superconducting electronics” presented by C. Puglia and F. Vischi and “Revealing the Spin-Orbit Interaction in InAs nanowires” by A. Iorio.

Poster – Field-effect metallic superconducting electronicsDownload
Poster – Revealing the Spin-Orbit interaction in InAs nanowiresDownload
  • C. Puglia and F. Vischi and the poster “Field-effect metallic superconducting electronics”
  • A. Iorio and the poster “Revealing the Spin-Orbit Interaction in InAs nanowires”
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“Vectorial Control of the Spin–Orbit Interaction in Suspended InAs Nanowires” featured as cover of Nano Letters

The paper “Vectorial Control of the Spin–Orbit Interaction in Suspended InAs Nanowires” published on Nano Letters by A. Iorio (PhD student at the SQEL group) and co-workers has been selected as supplementary cover of the journal’s current issue.

The cover image shows the suspended architecture of a typical device which allows avoidance of the influence of the substrate, investigating the intrinsic spin-orbit in InAs nanowires and controlling its vectorial coupling by field effect.

Check it out!

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SQEL lab website is finally online!

The Superconducting Quantum Electronics Lab is pleased to announce the new group website! Here you can find information on our research topics and the latest news and publications about what we are working on.

If you are interested to know more about us, feel free to look around and explore our website.

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Static electric field suppresses superconductivity!

A static electric field can be used to manipulate the superconducting state of metallic superconducting thin films, according to new experiments by researchers in Italy. The effect, which was first put forward by the London brothers, Fritz and Heinz, in their original formulation of superconductivity back in 1935, might be exploited in novel-concept devices such as supercurrent and Josephson field-effect transistors, as well as classical and possibly even quantum bits.

“It seems that we are realizing a novel phase of the superconducting state driven by electric fields”

says Francesco Giazotto of the Consiglio Nazionale delle Ricerche (CNR) and the Scuola Normale Superiore in Pisa, who led this research effort.
Continue reading “Static electric field suppresses superconductivity!”

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Magnetically-driven colossal supercurrent enhancement in InAs nanowire Josephson junctions

Sample layout and zero magnetic field characterization.

The Josephson effect is a fundamental quantum phenomenon where a dissipationless supercurrent is introduced in a weak link between two superconducting electrodes by Andreev reflections. The physical details and topology of the junction drastically modify the properties of the supercurrent and a strong enhancement of the critical supercurrent is expected to occur when the topology of the junction allows an emergence of Majorana bound states. in the paper by J. Tiira (former Post-Doc student at NEST Laboratory) and collaborators, a group coordinated by Francesco Giazotto from Istituto Nanoscienze, CNR@NEST, has reported on Nature Communication journal charge transport measurements in mesoscopic Josephson junctions formed by InAs nanowires and Ti/Al superconducting leads.

Continue reading “Magnetically-driven colossal supercurrent enhancement in InAs nanowire Josephson junctions”