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Related papers: Nitrogen in Silicon for Room Temperature Single El…

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We provide here a roadmap for modeling silicon nano-devices with one or two group V donors (D). We discuss systems containing one or two electrons, that is, D^0, D^-, D_2^+ and D_2^0 centers. The impact of different levels of approximation…

Mesoscale and Nanoscale Physics · Physics 2017-02-17 A. L. Saraiva , A. Baena , M. J. Calderón , Belita Koiller

Atomic precision advanced manufacturing (APAM) offers creation of donor devices in an atomically thin layer doped beyond the solid solubility limit, enabling unique device physics. This presents an opportunity to use APAM as a pathfinding…

The temperature measurement of material inside of an object is one of the key technologies for control of dynamical processes. For this purpose, various techniques such as laser-based thermography and phase-contrast imaging thermography…

In this article, we present a configurable field-effect transistor (FET), where not only polarity (n- and p-type), but the conduction mechanism of a FET can also be configured dynamically. As a result, we can have both types of devices,…

Mesoscale and Nanoscale Physics · Physics 2014-12-17 Chitrakant Sahu , Avinash Lahgere , Jawar Singh

We report on single-electron shuttling experiments with a silicon metal-oxide-semiconductor quantum dot at 300 mK. Our system consists of an accumulated electron layer at the Si/SiO_2 interface below an aluminum top gate with two additional…

Quantum Physics · Physics 2015-03-19 K. W. Chan , M. Mottonen , A. Kemppinen , N. S. Lai , K. Y. Tan , W. H. Lim , A. S. Dzurak

Stoichiometric SiNx layers (x = [N]/[Si] = 1.33) are doped with Si atoms by ultra-low energy ion implantation (ULE-II) and subsequently annealed at different temperatures in inert ambient conditions. Detailed material and memory cells…

Beyond a critical disorder, two-dimensional (2D) superconductors become insulating. In this Superconductor-Insulator Transition (SIT), the nature of the insulator is still controversial. Here, we present an extensive experimental study on…

Disordered Systems and Neural Networks · Physics 2021-11-19 V. Humbert , M. Ortũno , A. M. Somoza , L. Bergé , L. Dumoulin , C. A Marrache-Kikuchi

High-purity single photon sources (SPS) that can operate at room temperature are highly desirable for a myriad of applications, including quantum photonics and quantum key distribution. In this work, we realise an ultra-bright solid-state…

Low dimensional nano-systems are promising candidates for manipulating, controlling and capturing photons with large sensitivities and low-noise. If quantum engineered to tailor the energy of the localized electrons across the desired…

A superconductor-normal metal-superconductor (SNS) transistor based on superconducting microcoolers is presented. The proposed 4-terminal device consists of a long SNS Josephson junction whose N region is in addition symmetrically connected…

Superconductivity · Physics 2008-07-12 F. Giazotto , F. Taddei , T. T. Heikkila , R. Fazio , F. Beltram

We present ab initio calculations on the band structure and density of states of single wall semiconducting carbon nanotubes with high degrees (up to 25%) of B, Si and N substitution. The doping process consists of two phases: different…

Mesoscale and Nanoscale Physics · Physics 2015-01-13 E. Tetik

We present the findings of the superconductivity in the silicon nanostructures prepared by short time diffusion of boron of the n - type Si (100) surface. These Si - based nanostructures represent the p - type ultra-narrow self - assembled…

In this study, using first-principles calculations, we investigate the behavior of electrons at the SiC/SiO$_2$ interface when nitrogen is introduced as a dopant within a few nm of the SiC surface. When a highly doped nitrogen layer…

Materials Science · Physics 2023-07-05 Keita Tachiki , Yusuke Nishiya , Jun-ichi Iwata , Yu-ichiro Matsushita

Silicon is a leading qubit platform thanks to the exceptional coherence times that can be achieved and to the available commercial manufacturing platform for integration. Building scalable quantum processing architectures relies on accurate…

Mesoscale and Nanoscale Physics · Physics 2021-07-21 B. Voisin , J. Salfi , R. Rahman , S. Rogge

The realization of semiconductor structures with stable excitons at room temperature is crucial for the development of excitonics and polaritonics. Quantum confinement has commonly been employed for enhancing excitonic effects in…

Owing to their sensitivity to temperature fluctuations, normal metal-insulator-superconductor (NIS) junctions are leveraged in various thermal devices. This study illustrates that two NISIN reservoirs can achieve a measurable negative…

Mesoscale and Nanoscale Physics · Physics 2025-07-10 M. Pioldi , G. De Simoni , A. Braggio , F. Giazotto

We present a hybrid light-emitting diode structure composed of an n-type gallium nitride nanowire on a p-type silicon substrate in which current is injected along the length of the nanowire. The device emits ultraviolet light under both…

Other Condensed Matter · Physics 2007-08-10 Mariano A. Zimmler , Jiming Bao , Ilan Shalish , Wei Yi , Joonah Yoon , Venkatesh Narayanamurti , Federico Capasso

We investigate a Quantum Dot (QD) in a Carbon Nanotube (CNT) in the regime where the QD is nearly isolated from the leads. An aluminum single electron transistor (SET) serves as a charge detector for the QD. We precisely measure and tune…

Mesoscale and Nanoscale Physics · Physics 2008-11-17 G. Gotz , G. A. Steele , W. Vos , L. P. Kouwenhoven

Superconducting nanowire single photon detectors (SNSPDs) offer high-quantum-efficiency and low-dark-count-rate single photon detection. In a growing number of cases, large magnetic fields are being incorporated into quantum microscopes,…

The temperature dependence of conductivity $\sigma (T)$ of a two-dimensional electron system in silicon has been studied in parallel magnetic fields B. At B=0, the system displays a metal-insulator transition at a critical electron density…

Strongly Correlated Electrons · Physics 2009-11-07 Kevin Eng , X. G. Feng , Dragana Popovic , S. Washburn