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This is a materials-fabrication result. Tuning nitrogen flow during reactive sputtering raises the superconducting transition temperature of titanium nitride films to 4.93 K, which matters because TiN is being considered as a material for superconducting qubit hardware. For quantum readers, the useful takeaway is that film quality, not just thickness, drives conductivity, so deposition control is a fabrication lever. The article does not show whether the higher Tc improves qubit coherence or device yield.
Researchers Link Nitrogen Flow to 4.93K Superconductivity in TiN
A nitrogen flow rate of just 1. 5 sccm now unlocks peak performance in titanium nitride thin films, achieving a record 4. 93K transition temperature alongside enhanced conductivity.
Researchers at the Shanghai Institute of Microsystem and Information Technology boosted superconductivity through careful control of nitrogen flow during titanium nitride manufacture. The team demonstrated that carefully controlling nitrogen gas flow during titanium nitride deposition sharply impacts its superconducting performance. Films grown with optimised conditions, specifically a nitrogen flow rate of 1.5 sccm, exhibited higher operating temperatures for superconductivity and improved electrical conductivity; sample *quality* is as important…
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