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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

Thin films of molybendum disulfide grown via thermal atomic layer deposition at low temperatures, suitable for temperature sensible substrates, can be amorphous. To avoid a high temperature post treatment of the whole sample, which can…

Further development of nuclear power plant technology relies heavily on materials durability under operating conditions. Estimating the materials performance in the operando tests is crucial. In this paper, the mechanical behavior of thin…

Superconducting resonators used in millimeter-submillimeter astronomy would greatly benefit from deposited dielectrics with a small dielectric loss. We deposited hydrogenated amorphous silicon films using plasma-enhanced chemical vapor…

Instrumentation and Methods for Astrophysics · Physics 2023-02-03 Bruno T. Buijtendorp , Juan Bueno , David J. Thoen , Vignesh Murugesan , Paolo M. Sberna , Jochem J. A. Baselmans , Sten Vollebregt , Akira Endo

Building usefully coherent superconducting quantum processors depends on reducing losses in their constituent materials. Tantalum, like niobium, has proven utility as the primary superconducting layer within highly coherent qubits. But,…

Superconductivity · Physics 2023-09-19 L. D. Alegria , D. M. Tennant , K. R. Chaves , J. R. I. Lee , S. R. O'Kelley , Y. J. Rosen , J L DuBois

Recently, hexagonal boron nitride (hBN) layers have generated a lot of interest as ideal substrates for 2D stacked devices. Sapphire-supported thin hBN films of different thicknesses are grown using metalorganic vapour phase epitaxy…

Materials Science · Physics 2019-07-15 Kousik Bera , D. Chugh , Atanu Patra , H. Hoe Tan , C. Jagadish Anushree Roy

We have investigated the structures and electronic properties of ultra-thin Bi(110) films grown on an s-wave superconductor substrate using low-temperature scanning tunneling microscopy and spectroscopy. Remarkably, our experimental results…

Nanocomposite thin films of Zinc Oxide and Silicon were grown by co-evaporating powdered ZnO and Si. This resulted in nanocrystallites of ZnO being embedded in Silicon. The mismatch in crystal structures of constituent materials result in…

Materials Science · Physics 2009-11-13 Shabnam Siddiqui , Chhaya Ravi Kant , P. Arun , N. C. Mehra

Density of the polyacrylamide ultrathin films has been studied using X-ray reflectivity technique. Two sources (one powder and another aqueous solution) of polyacrylamide were used to prepare spin coated films on silicon substrate. Light…

Soft Condensed Matter · Physics 2009-04-14 Mojammel H. Mondal , M. Mukherjee , K. Kawashima , K. Nishida , T. Kanaya

In hydrogenated amorphous silicon oxide (a-SiO:H) films, incorporation of oxygen enhances optical gap due to a large number of St-O-Si bond formation, which lies deep into valence band states. An induction effect of this Si-O on other bonds…

Condensed Matter · Physics 2007-11-17 S. M. Iftiquar

In a material prone to a nematic instability, anisotropic strain in principle provides a preferred symmetry-breaking direction for the electronic nematic state to follow. This is consistent with experimental observations, where electronic…

Strongly Correlated Electrons · Physics 2021-02-09 Zheng Ren , Hong Li , He Zhao , Shrinkhala Sharma , Ziqiang Wang , Ilija Zeljkovic

Drawing inspiration from nature, where some organisms can control the short range order of amorphous minerals, we successfully manipulated the short range order of amorphous alumina by surface and size effects. By utilizing the Atomic Layer…

Materials Science · Physics 2014-02-18 Leonid Bloch , Yaron Kauffmann , Boaz Pokroy

Dual-phase Zr-based thin films synthesized by magnetron co-sputtering and showing competitive growth between amorphous and crystalline phases have been reported recently. In such films, the amorphous phase grows as columns, while the…

Plasma Physics · Physics 2023-01-23 Q. Liebgott , A. Borroto , Z. Fernández-Gutiérrez , S. Bruyère , F. Mücklich , D. Horwat

We demonstrate the growth of thin films of molybdenum ditelluride and molybdenum diselenide on sapphire substrates by molecular beam epitaxy. In-situ structural and chemical analyses reveal stoichiometric layered film growth with atomically…

The evolution is presented of infrared transmission spectra of hydrogenated and chlorinated amorphous silicon films versus the chlorine concentration and the annealing temperature. As the chlorine content increases, an increase of the 2100…

Materials Science · Physics 2021-10-11 S. Kalem , R. Mostefaoui , J. Bourneix , J. Chevallier

Thin films formed from small molecules rapidly gain importance in different technological fields. To explain their growth, methods developed for zero--dimensional atoms as the film forming particles are applied. However, in organic thin…

Materials Science · Physics 2013-03-14 Gregor Hlawacek , Christian Teichert

Strained coherent heteroepitaxy of III-V semiconductor films such as In$_x$Ga$_{1-x}$As/GaAs has potential for electronic and optoelectronic applications such as high density logic, quantum computing architectures, laser diodes, and other…

Materials Science · Physics 2009-11-13 Lawrence H. Friedman

Silver nanoparticles embedded in a dielectric matrix are investigated for their potential as broadband-absorbing optical sensor materials. This contribution focuses on the electrical properties of silver nanoparticles at various…

Materials Science · Physics 2011-06-21 Haoyan Wei , Hergen Eilers

We have studied the dark conductivity of a broad microstructural range of plasma deposited single phase undoped microcrystalline silicon films in a wide temperature range (15 - 450K) to identify the possible transport mechanisms and the…

Materials Science · Physics 2009-11-13 Sanjay K. Ram , Satyendra Kumar , P. Roca i Cabarrocas

Quantum two-level systems (TLSs) intrinsic to glasses induce decoherence in many modern quantum devices, such as superconducting qubits. Although the low-temperature physics of these TLSs is usually well-explained by a phenomenological…

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