Minimal Damage and Tunable Fabrication of Atomic‐Scale Ultrathin YBa2Cu3O7‐δ Nanowires with High Uniformity DOI Creative Commons
Huiqin Ma, Hanbin Wang,

Yang Wang

et al.

Small Structures, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 2, 2025

The growing demand for deep‐space optical communication and remote sensing has highlighted the need high‐temperature superconducting nanowire single photon detectors (SNSPDs). However, fabricating ultrathin ultranarrow nanowires remains significant challenges due to extreme instability of their films. Herein, an effective approach is presented high‐quality YBa 2 Cu 3 O 7 − δ (YBCO) by utilizing in situ protective layers that shield films from environmental processing‐induced degradation, coupled with low‐temperature etching techniques achieve precise, tunable while minimizing damage. Thus, YBCO are successfully fabricated a minimum width 68 nm, atomic‐scale thickness 5 lateral damage limited ≈15 nm. These exhibit robust I – V hysteresis switching current ( s ) about 120 μA. coefficient variation less than 6% critical temperature T c0 below 1%, confirming exceptional uniformity nanowires. Electrical transport measurements reveal voltage these governed phase slip hotspot effects. advancements open new avenues YBCO‐based SNSPDs, addressing key challenge broader deployment devices, including quantum interference diodes.

Language: Английский

Minimal Damage and Tunable Fabrication of Atomic‐Scale Ultrathin YBa2Cu3O7‐δ Nanowires with High Uniformity DOI Creative Commons
Huiqin Ma, Hanbin Wang,

Yang Wang

et al.

Small Structures, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 2, 2025

The growing demand for deep‐space optical communication and remote sensing has highlighted the need high‐temperature superconducting nanowire single photon detectors (SNSPDs). However, fabricating ultrathin ultranarrow nanowires remains significant challenges due to extreme instability of their films. Herein, an effective approach is presented high‐quality YBa 2 Cu 3 O 7 − δ (YBCO) by utilizing in situ protective layers that shield films from environmental processing‐induced degradation, coupled with low‐temperature etching techniques achieve precise, tunable while minimizing damage. Thus, YBCO are successfully fabricated a minimum width 68 nm, atomic‐scale thickness 5 lateral damage limited ≈15 nm. These exhibit robust I – V hysteresis switching current ( s ) about 120 μA. coefficient variation less than 6% critical temperature T c0 below 1%, confirming exceptional uniformity nanowires. Electrical transport measurements reveal voltage these governed phase slip hotspot effects. advancements open new avenues YBCO‐based SNSPDs, addressing key challenge broader deployment devices, including quantum interference diodes.

Language: Английский

Citations

0