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The availability of transistors capable of operating at low supply voltage is essential to improve the key performance metric of computing circuits, i.e., the number of operations per unit energy. In this paper, we propose a new device…

Mesoscale and Nanoscale Physics · Physics 2020-10-30 Demetrio Logoteta , Jiang Cao , Marco Pala , Philippe Dollfus , Youseung Lee , Giuseppe Iannaccone

The ladder configuration of atomic levels provides a source for telecom photons (signal) from the upper atomic transition. \ For rubidium and cesium atoms, the signal field has the range around 1.3-1.5 $\mu$m that can be coupled to an…

Quantum Physics · Physics 2014-03-12 H. H. Jen

A superconducting tunnel junction is used to directly extract quasiparticles from one of the leads of a single-Cooper-pair-transistor. The consequent reduction in quasiparticle density causes a lower rate of quasiparticle tunneling onto the…

Superconductivity · Physics 2012-09-18 A. J. Ferguson

Traditional equivalent circuit models (ECMs) have difficulties in estimating battery internal states due to the lack of relevant physics, such as the lithium diffusion in active particles. Here we configure a circuit network to describe the…

Materials Science · Physics 2023-04-04 Mingzhao Zhuo , Niall Kirkaldy , Tom Maull , Timothy Engstrom , Gregory Offer , Monica Marinescu

We present investigation of the influence of cascade emission to the formation of spectra from plasma created by electron beam ion trap (EBIT) in electron trapping mode. It has been shown that cascade emission can play an important role in…

Atomic Physics · Physics 2013-10-14 Valda Jonauskas , Šarūnas Masys , Aušra Kynienė , Gediminas Gaigalas

Electron scattering on both neutral ($X$) and charged ($X^-$) excitons in quantum wells is studied theoretically. A microscopic model is presented, taking into account both elastic and dissociating scattering. The model is based on…

Condensed Matter · Physics 2009-11-07 G. Ramon , A. Mann , E. Cohen

Hydrogen electron cyclotron resonance ion sources plasma measurements based on simple optical emission spectroscopy on a new compact low current ion source designed and built by the authors is presented. By observing the plasma luminescence…

Semiconductor nanostructures based on two dimensional electron gases (2DEGs) have the potential to provide new approaches to sensing, information processing, and quantum computation. Much is known about electron transport in 2DEG…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 M. A. Topinka , B. J. LeRoy , R. M. Westervelt , S. E. J. Shaw , R. Fleischmann , E. J. Heller , K. D. Maranowski , A. C. Gossard

The paper discusses the nano-diode and nano-triode structures of vacuum electronics. Such structures may have the dielectric film with the thickness of several nanometers wich is located on the cathode. Such film with a large dielectric…

Other Condensed Matter · Physics 2014-11-17 Michael V. Davidovich , Nikolai A. Buhuev , Ravil K. Yafarov

The conversion of light into free electron-hole pairs constitutes the key process in the fields of photodetection and photovoltaics. The efficiency of this process depends on the competition of different relaxation pathways and can be…

Mesoscale and Nanoscale Physics · Physics 2013-04-24 K. J. Tielrooij , J. C. W. Song , S. A. Jensen , A. Centeno , A. Pesquera , A. Zurutuza Elorza , M. Bonn , L. S. Levitov , F. H. L. Koppens

We have developed a fabrication process for nanoscale tunnel junctions which includes focused-ion-beam etching from different directions. By applying the process to a Nb/(Al-)Al_2O_3/Nb trilayer, we have fabricated a Nb single-electron…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Michio Watanabe , Yasunobu Nakamura , Jaw-Shen Tsai

We derive and evaluate expressions for the dc tunneling conductance between interacting two-dimensional electron systems at non-zero temperature. The possibility of using the dependence of the tunneling conductance on voltage and…

Condensed Matter · Physics 2009-10-28 T. Jungwirth , A. H. MacDonald

A Josephson tunnel junction transistor based on quasiparticle injection is proposed. Its operation relies on the manipulation of the electron distribution in one of the junction electrodes. This is accomplished by injecting quasiparticle…

Superconductivity · Physics 2008-07-12 F. Giazotto , J. P. Pekola

One-dimensional quantized conductance is derived from the electrons in a homogeneous electric field by calculating the traveling time of the accelerated motion and the number of electrons in the one-dimensional region. As a result, the…

Mesoscale and Nanoscale Physics · Physics 2024-12-25 Daiju Terasawa

In this work, we demonstrate a silicon nanocrystal Field Effect Transistor (ncFET). Its operation is similar to that of a Tunnelling Field Effect Transistor (TFET) with two barriers in series. The tunnelling barriers are fabricated in very…

Mesoscale and Nanoscale Physics · Physics 2014-05-20 Patrick Harvey-Collard , Dominique Drouin , Michel Pioro-Ladrière

The electride Sr$_3$CrN$_3$ has a one-dimensional channel of electron density, which is a rare feature that offers great potential for fast ion conduction. Using density functional theory, we find that Sr$_3$CrN$_3$ is an excellent hydride…

Materials Science · Physics 2021-12-07 Xu Miaoting , Cuicui Wang , Benjamin J. Morgan , Lee A. Burton

Conventional electrical circuits are generally rigid in their components and working styles which are not flexible and stretchable. From an alternative, liquid metal based soft electronics is offering important opportunities for innovating…

Applied Physics · Physics 2018-03-29 Yi Ren , Jing Liu

Break junctions provide tip-shaped contact electrodes that are fundamental components of nano and molecular electronics. However, the fabrication of break junctions remains notoriously time-consuming and difficult to parallelize. Here we…

Josephson junctions form the essential non-linearity for almost all superconducting qubits. The junction is formed when two superconducting electrodes come within $\sim$1 nm of each other. Although the capacitance of these electrodes is a…

The current flow in phosphorene pnp junctions is studied. At the interfaces of the junction, omni-directional total reflection takes place, named anti-super-Klein tunneling, as this effect is not due to an energetically forbidden region but…

Mesoscale and Nanoscale Physics · Physics 2021-09-08 Yonatan Betancur-Ocampo , Emmanuel Paredes-Rocha , Thomas Stegmann