Author:
Barone C.,Cirillo C.,Carapella G.,Granata V.,Santoro D.,Attanasio C.,Pagano S.
Abstract
AbstractNbRe-based superconducting thin films recently received relevant interest in the field of low-temperature electronics. However, for these materials the electrical conduction mechanisms, in particular in the normal state, still need to be investigated in more detail. Here, NbRe and NbReN films of different thicknesses have been deposited on two different substrates, namely monocrystalline Si and $$\text {SiO}_2$$
SiO
2
buffered Si. The films were characterized by DC electrical transport measurements. Moreover, a connection with the charge carriers fluctuation processes has been made by analyzing the electrical noise generated in the normal state region. Despite the films morphology seems not to be affected by the substrate used, a lower noise level has been found for the ones grown on $$\text {SiO}_2$$
SiO
2
, in particular for NbReN. From this study it emerges that both NbRe and NbReN ultrathin films are of very good quality, as far as the low-temperature electrical noise and conduction are concerned, with noise levels competitive with NbN. These results may further support the proposal of using these materials in a nanowire form in the field of superconducting electronics.
Funder
Università degli Studi di Salerno
Istituto Nazionale di Fisica Nucleare
Publisher
Springer Science and Business Media LLC
Reference46 articles.
1. Gutierrez-D, E. A., Jamal Deen, M. & Claeys, C. Low Temperature Electronics: Physics, Devices, Circuits, and Applications (Academic Press, 2000).
2. Xu, F., Ma, X., Zhang, Q., Lo, H.-K. & Pan, J.-W. Secure quantum key distribution with realistic devices. Rev. Mod. Phys. 92, 025002 (2020).
3. Natarajan, C. M., Tanner, M. G. & Hadfield, R. H. Superconducting nanowire single-photon detectors: physics and applications. Supercond. Sci. Technol. 25, 063001 (2012).
4. Zadeh, I. E. et al. Superconducting nanowire single-photon detectors: A perspective on evolution, state-of-the-art, future developments, and applications. Appl. Phys. Lett. 118, 190502 (2021).
5. Holzman, I. & Ivry, Y. Superconducting nanowires for single-photon detection: progress, challenges, and opportunities. Adv. Quantum Technol. 2, 1800058 (2019).
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献