Low Tc Hafnium Kinetic Inductance Device with High Internal Quality Factor
Fuente:
arXiv
Salvato in:
| Autori principali: | , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866909532873031680 |
|---|---|
| author | Li, Xinran Suzuki, Aritoki Garcia-Sciveres, Maurice |
| author_facet | Li, Xinran Suzuki, Aritoki Garcia-Sciveres, Maurice |
| contents | Kinetic inductance devices (KIDs) are superconducting resonators with high kinetic inductance sensitive to external energy perturbations. KIDs made with superconductors having $T_c$ far below one Kelvin are of particular interest for sensing minuscule signals, such as light dark matter detection and millimeter wave telescopes for astronomy and cosmology. In this work, we report the promising performance of KIDs fabricated with Hafnium from heated sputter depositions. The KIDs have $T_c$ lower than 249$\pm$2 mK, the internal quality factor ($Q_i$) of the resonators exceeds $10^5$ and the temperature dependence of the resonances can be described by the generalized Mattis-Bardeen model with a disorder parameter $Γ=4\times10^{-3}Δ_0$. Post-fabrication annealing at temperatures above the deposition temperature can further reduce the $T_c$ and $Γ$ without reducing $Q_i$, leading to improvements in energy resolution. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_19818 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Low Tc Hafnium Kinetic Inductance Device with High Internal Quality Factor Li, Xinran Suzuki, Aritoki Garcia-Sciveres, Maurice High Energy Physics - Experiment Kinetic inductance devices (KIDs) are superconducting resonators with high kinetic inductance sensitive to external energy perturbations. KIDs made with superconductors having $T_c$ far below one Kelvin are of particular interest for sensing minuscule signals, such as light dark matter detection and millimeter wave telescopes for astronomy and cosmology. In this work, we report the promising performance of KIDs fabricated with Hafnium from heated sputter depositions. The KIDs have $T_c$ lower than 249$\pm$2 mK, the internal quality factor ($Q_i$) of the resonators exceeds $10^5$ and the temperature dependence of the resonances can be described by the generalized Mattis-Bardeen model with a disorder parameter $Γ=4\times10^{-3}Δ_0$. Post-fabrication annealing at temperatures above the deposition temperature can further reduce the $T_c$ and $Γ$ without reducing $Q_i$, leading to improvements in energy resolution. |
| title | Low Tc Hafnium Kinetic Inductance Device with High Internal Quality Factor |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2502.19818 |