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We report the growth of aluminum (111) thin film by atomic layer deposition (ALD) technique with dimethylethylaminealane (DMEAA) as a precursor. It is found that the metallic underlayer is essential to grow uniform aluminum films by DMEAA…

Superconductivity · Physics 2021-06-08 Sameh Okasha , Yoshiaki Sekine , Satoshi Sasaki , Yuichi Harada

In this paper we demonstrated the thermal Atomic Layer Deposition (ALD) growth at 250 {\deg}C of highly homogeneous and ultra-thin ($\approx$ 3.6 nm) $Al_2O_3$ films with excellent insulating properties directly onto a monolayer (1L)…

A fabrication process for Nb/Al-AlOx/Nb Josephson junctions (JJs) with sizes down to 200 nm has been developed on a 200-mm-wafer tool set typical for CMOS foundry. This process is the core of several nodes of a roadmap for fully-planarized…

Despite its interest for CMOS applications, Atomic Layer Deposition (ALD) of GeO$_{2}$ thin films, by itself or in combination with SiO$_{2}$, has not been widely investigated yet. Here we report the ALD growth of SiO$_{2}$/GeO$_{2}$…

Materials Science · Physics 2020-07-29 Jordi Antoja-Lleonart , Silang Zhou , Kit de Hond , Gertjan Koster , Guus Rijnders , Beatriz Noheda

We report on growth of high-aspect-ratio ($\gtrsim300$) zinc sulfide nanotubes with variable, precisely tunable, wall thicknesses and tube diameters into highly ordered pores of anodic alumina templates by atomic layer deposition (ALD) at…

Materials Science · Physics 2009-08-05 Sh. Farhangfar , R. B. Yang , M. Pelletier , K. Nielsch

We show that less than 10% of the barrier area dominates the electron tunneling in state-of-art Al/AlOx/Al Josephson junctions. They have been studied by transmission electron microscopy, specifically using atomic resolution annular dark…

Mesoscale and Nanoscale Physics · Physics 2015-11-16 L. J. Zeng , S. Nik , T. Greibe , C. M. Wilson , P. Delsing , E. Olsson

Superconducting qubit fabrication innovations continue to be explored to achieve higher performance. Despite improvements to base layer fabrication and processing, resist-based Josephson junction (JJ) schemes have largely remained…

Quantum Physics · Physics 2026-05-18 Tathagata Banerjee , Stephen Daniel Funni , Saswata Roy , Judy J. Cha , Valla Fatemi

We tested oxidized titanium layers as barriers for hybrid Josephson junctions with high $I_cR_n$-products and for the preparation of junctions for tunneling spectroscopy. For that we firstly prepared junctions with conventional…

In the past decade, nanopores have been developed extensively for various potential applications, and their performance greatly depends on the surface properties of the nanopores. Atomic layer deposition (ALD) is a new technology for…

Mesoscale and Nanoscale Physics · Physics 2013-09-24 Ceming Wang , Delin Kong , Qiang Chen , Jianming Xue

Josephson junctions were fabricated using two different methods of barrier formation. The trilayers employed were Nb/Al-AlOx/Nb on sapphire, where the first two layers were epitaxial. The oxide barrier was formed either by exposing the Al…

Superconductivity · Physics 2010-12-16 Paul B. Welander , Timothy J. McArdle , James N. Eckstein

In this paper, the atomic layer deposition (ALD) of ultra-thin films (<4 nm) of $Al_{2}O_{3}$ and $HfO_{2}$ on Au-supported monolayer (1L) $MoS_{2}$ is investigated, providing an insight on the nucleation mechanisms in the early stages of…

Atomic layer deposition (ALD) is a key technique for the continued scaling of semiconductor devices, which increasingly relies on reproducible and scalable processes for interface manipulation of 3D structured surfaces on the atomic scale.…

We present a computational study of the adhesive and structural properties of the Al/Al2O3 interfaces as building blocks of the Metal-Insulator-Metal (MIM) tunnel devices, where electron transport is accomplished via tunnelling mechanism…

Mesoscale and Nanoscale Physics · Physics 2018-05-09 M. Koberidze , M. J. Puska , R. M. Nieminen

One of the practical limitations of solid-state superconducting quantum processors technology is frequency crowding due to low qubits fabrication reproducibility. Josephson junction 100 nm-scale nonlinear inductance of the qubits still…

Josephson diode (JD) effect found in Josephson tunnel junctions (JTJs) has attracted a great deal of attention due to its importance for developing superconducting circuitry based quantum technologies. So far, the highly desirable…

The paper presents results for zinc oxide films grown at low temperature regime by Atomic Layer Deposition (ALD). We discuss electrical properties of such films and show that low temperature deposition results in oxygen-rich ZnO layers in…

The microscopic structure of ultra-thin oxide barriers often plays a major role in modern nano-electronic devices. In the case of superconducting electronic circuits, their operation depends on the electrical non-linearity provided by one…

Materials Science · Physics 2015-08-25 Timothy C. DuBois , Martin J. Cyster , George Opletal , Salvy P. Russo , Jared H. Cole

Tantalum (Ta) has emerged as a promising low-loss material, enabling record coherence times in superconducting qubits. This enhanced performance is largely attributed to its stable native oxide, which may host fewer two-level system (TLS)…

We report plasma-enhanced atomic layer deposition (ALD) to prepare conformal nickel thin films and nanotubes by using nickelocene as a precursor, water as the oxidant agent and an in-cycle plasma enhanced reduction step with hydrogen. The…

Atomic layer deposition (ALD) enables the conformal coating of porous materials, making the technique suitable for pore size tuning at the atomic level, e.g., for applications in catalysis, gas separation and sensing. It is, however, not…