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Progress in superconducting device and detector technologies over the past decade have realized practical applications in quantum computers, detectors for far-infrared telescopes, and optical communications. Superconducting thin film…

We demonstrate high-efficiency superconducting nanowire single-photon detectors (SNSPDs) fabricated from MoSi thin-films. We measure a maximum system detection efficiency (SDE) of 87 +- 0.5 % at 1542 nm at a temperature of 0.7 K, with a…

Instrumentation and Detectors · Physics 2016-01-20 V. B. Verma , B. Korzh , F. Bussières , R. D. Horansky , S. D. Dyer , A. E. Lita , I. Vayshenker , F. Marsili , M. D. Shaw , H. Zbinden , R. P. Mirin , S. W. Nam

Superconducting thin films have been prepared on Si-substrates, using pulsed laser deposition from a target composed of a mixture of Mg and MgB2 powders. The films were deposited at room temperature and post-annealed at 600 degrees C. The…

Implementing superconductors capable of proximity-inducing a large energy-gap in semiconductors in the presence of strong magnetic fields is a major goal towards applications of semiconductor/superconductor hybrid materials in future…

Mesoscale and Nanoscale Physics · Physics 2022-11-07 Bilal Kousar , Damon J. Carrad , Lukas Stampfer , Peter Krogstrup , Jesper Nygård , Thomas S. Jespersen

Vanadium silicide (V$_3$Si) is a promising superconductor for integration with silicon-based electronics, however the interfacial growth kinetics have a strong influence on the resulting superconducting properties and are not yet fully…

Transition Metal Nitrides are a versatile class of materials, combining chemical robustness, high hardness, and superconducting behaviour with critical temperatures between 2 to 10 K. While several binary TMNs have been explored,…

In this work, amorphous thin films in Mg-Si-O-N system were prepared in order to investigate the dependence of optical and mechanical properties on Mg composition. Reactive RF magnetron co-sputtering from magnesium and silicon targets were…

Topological insulators are immensely investigated for their surface states related properties as these materials can be used for various spintronics, quantum computing, and optoelectronics applications. In this perspective, different…

Materials Science · Physics 2022-07-05 Yogesh Kumar , Prince Sharma , V. P. S. Awana

In view of their immensely intriguing properties, two dimensional materials are being intensely researched in search of novel phenomena and diverse application interests, however, studies on the realization of nanocomposites in the…

Superconducting thin films of MgB2 were deposited by Pulsed Laser Deposition on magnesium oxide and sapphire substrates. Samples grown at 450C in an argon buffer pressure of about 10-2 mbar by using a magnesium enriched target resulted to…

2D ferromagnets offer valuable insights into the fundamentals of magnetism and stimulate the progress of ultracompact spintronics. The demand for seamless integration of the materials with the Si technology, particularly helpful to their…

Porous silicon, obtained by electrochemical etching, has been used as a substrate for the growth of nanoperforated Nb thin films. The films, deposited by UHV magnetron sputtering on the porous Si substrates, inherited their structure made…

Molybdenum disilicide (MoSi$_2$) is a very promising material for high temperature structural applications due to its high melting point (2030 {\deg}C), low density, high thermal conductivity and good oxidation resistance. However, MoSi$_2$…

We report a milestone in achieving large-scale, ultrathin (~5 nm) superconducting NbN thin films on 300 mm Si wafers using a high-volume manufacturing (HVM) industrial physical vapor deposition (PVD) system. The NbN thin films possess…

Molybdenum disulfide (MoS$_2$) is a high-potential material for nanoelectronic applications, especially when thinned to a few layers. Liquid phase exfoliation enables large-scale fabrication of thin films comprising single- and few-layer…

Materials Science · Physics 2024-11-19 Alireza Ghasemifard , Agnieszka Kuc , Thomas Heine

We demonstrate high-performance nanowire superconducting single photon detectors (SSPDs) on ultrathin NbN films grown at a temperature compatible with monolithic integration. NbN films ranging from 150nm to 3nm in thickness were deposited…

Optics · Physics 2009-11-13 F. Marsili , D. Bitauld , A. Fiore , A. Gaggero , F. Mattioli , R. Leoni , M. Benkahoul , F. Levy

Niobium thin films on silicon substrate used in the fabrication of superconducting qubits have been characterized using scanning and transmission electron microscopy, electrical transport, magnetization, quasiparticle spectroscopy, and…

Amorphous Si (a-Si) nanostructures are ubiquitous in numerous electronic and optoelectronic devices. Amorphous materials are considered to possess the lower limit to the thermal conductivity (k), which is ~1 W/m-K for a-Si. However, recent…

Materials Science · Physics 2017-01-03 Soonshin Kwon , Jianlin Zheng , Matthew C. Wingert , Shuang Cui , Renkun Chen

Magnetoresistance oscillations were observed on networks of superconducting ultrathin Nb nanowires presenting evidences of either thermal or quantum activated phase slips. The magnetic transport data, discussed in the framework of different…

Superconductivity · Physics 2014-10-08 C. Cirillo , S. L. Prischepa , M. Trezza , V. P. Bondarenko , C. Attanasio

Molybdenum rhenium alloy thin films can exhibit superconductivity up to critical temperatures of $T_c=15\mathrm{K}$. At the same time, the films are highly stable in the high-temperature methane / hydrogen atmosphere typically required to…

Mesoscale and Nanoscale Physics · Physics 2016-03-08 K. J. G. Götz , S. Blien , P. L. Stiller , O. Vavra , T. Mayer , T. Huber , T. N. G. Meier , M. Kronseder , Ch. Strunk , A. K. Hüttel