Gate-controlled supercurrent effect in dry-etched Dayem bridges of non-centrosymmetric niobium rhenium
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2023
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866910520880136192 |
|---|---|
| author | Koch, Jennifer Cirillo, Carla Battisti, Sebastiano Ruf, Leon Kakhaki, Zahra Makhdoumi Paghi, Alessandro Gulian, Armen Teknowijoyo, Serafim De Simoni, Giorgio Giazotto, Francesco Attanasio, Carmine Scheer, Elke Di Bernardo, Angelo |
| author_facet | Koch, Jennifer Cirillo, Carla Battisti, Sebastiano Ruf, Leon Kakhaki, Zahra Makhdoumi Paghi, Alessandro Gulian, Armen Teknowijoyo, Serafim De Simoni, Giorgio Giazotto, Francesco Attanasio, Carmine Scheer, Elke Di Bernardo, Angelo |
| contents | The application of a gate voltage to control the superconducting current flowing through a nanoscale superconducting constriction, named as gate-controlled supercurrent (GCS), has raised great interest for fundamental and technological reasons. To gain a deeper understanding of this effect and develop superconducting technologies based on it, the material and physical parameters crucial for GCS must be identified. Top-down fabrication protocols should be also optimized to increase device scalability, although studies suggest that top-down fabricated devices are more resilient to show GCS. Here, we investigate gated superconducting nanobridges made with a top-down fabrication process from thin films of the non-centrosymmetric superconductor NbRe. Unlike other devices previously reported, our NbRe devices systematically exhibit GCS, when made in specific conditions, which paves the way for higher device scalability. Our results also suggest that surface properties of NbRe nanobridges and their modification during fabrication are key for GCS. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_04268 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Gate-controlled supercurrent effect in dry-etched Dayem bridges of non-centrosymmetric niobium rhenium Koch, Jennifer Cirillo, Carla Battisti, Sebastiano Ruf, Leon Kakhaki, Zahra Makhdoumi Paghi, Alessandro Gulian, Armen Teknowijoyo, Serafim De Simoni, Giorgio Giazotto, Francesco Attanasio, Carmine Scheer, Elke Di Bernardo, Angelo Superconductivity Materials Science The application of a gate voltage to control the superconducting current flowing through a nanoscale superconducting constriction, named as gate-controlled supercurrent (GCS), has raised great interest for fundamental and technological reasons. To gain a deeper understanding of this effect and develop superconducting technologies based on it, the material and physical parameters crucial for GCS must be identified. Top-down fabrication protocols should be also optimized to increase device scalability, although studies suggest that top-down fabricated devices are more resilient to show GCS. Here, we investigate gated superconducting nanobridges made with a top-down fabrication process from thin films of the non-centrosymmetric superconductor NbRe. Unlike other devices previously reported, our NbRe devices systematically exhibit GCS, when made in specific conditions, which paves the way for higher device scalability. Our results also suggest that surface properties of NbRe nanobridges and their modification during fabrication are key for GCS. |
| title | Gate-controlled supercurrent effect in dry-etched Dayem bridges of non-centrosymmetric niobium rhenium |
| topic | Superconductivity Materials Science |
| url | https://arxiv.org/abs/2312.04268 |