Take a sneak peek at the new NIST.gov and let us know what you think!
(Please note: some content may not be complete on the beta site.).
NIST Authors in Bold
|Author(s):||David P. Pappas; Michael R. Vissers; Jiansong Gao; Martin O. Sandberg; David S. Wisbey; Kent D. Irwin;|
|Title:||Optimized superconducting detectors using the proximity effect in Ti/TiN multilayers|
|Published:||June 14, 2013|
|Abstract:||We apply the superconducting proximity effect in TiN/Ti multi-layers films to tune the critical temperature, $T_C$ (to within 10 mK) with high uniformity (less than 15 mK spread) across a 75 mm wafer. Reproducible $T_C$'s are obtained from 0.8 - 2.5 K. These films had high resistivities, $\ge 100$ $\mu \Ω$-cm and internal quality factors on the order of 100k and higher for resonators in the GHz range. Both trilayers of TiN/Ti/TiN and thicker multilayer films were prepared, demonstrating a highly controlled process for films from less than 15 nm to at least 60 nm thick. Detectors were fabricated and showed single photon resolution at 1550 nm. The high uniformity and controllability coupled with the high quality factor, kinetic inductance, and inertness of TiN make these films ideal for use in frequency multiplexed kinetic inductance detectors and other potential applications such as nano-wire detectors, transition edge sensors and associated quantum information applications.|
|Citation:||Applied Physics Letters|
|Pages:||pp. 232603-1 - 232603-4|
|Keywords:||Kinetic inductance sensors, superconductivity, resonators, single photon|
|Research Areas:||Quantum Physics|
|DOI:||http://dx.doi.org/10.1063/1.4804286 (Note: May link to a non-U.S. Government webpage)|