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The influence of edge vacancies on the working ability of the planar graphene tunnel field-effect transistor (TFET) is studied at various concentrations and distributions (normal, uniform, periodic) of defects. All calculations are…

Materials Science · Physics 2017-08-02 A. A. Glebov , V. L. Katkov , V. A. Osipov

We present a theory for tunneling spectroscopy in a break-junction semiconductor device for materials in which the electronic conduction mechanism is hopping transport. Starting from the conventional expression for the hopping current we…

Disordered Systems and Neural Networks · Physics 2009-11-10 O. Bleibaum , B. Sandow , W. Schirmacher

We explore the nature of the electroluminescence (EL) emission of purely n-doped GaAs/AlGaAs resonant tunneling diodes (RTDs) and the EL evolution with voltage. A singular feature of such a device is unveiled when the electrical output…

The demand for low-power devices is on the rise as semiconductor engineering approaches the quantum limit and quantum computing continues to advance. Two-dimensional (2D) superconductors, thanks to their rich physical properties, hold…

It is thought that strong electron correlation in an insulating parent phase would enhance a critical temperature (Tc) of superconductivity in a doped phase via enhancement of the binding energy of a Cooper pair as known in high-Tc…

Superconductivity · Physics 2016-04-14 Kota Hanzawa , Hikaru Sato , Hidenori Hiramatsu , Toshio Kamiya , Hideo Hosono

We present a novel p-GaN gate HEMT structure with reduced hole concentration near the Schottky interface by doping engineering in MOCVD, which aims at lowering the electric field across the gate. By employing an additional unintentionally…

Applied Physics · Physics 2021-06-04 Guangnan Zhou , Fanming Zeng , Rongyu Gao , Qing Wang , Kai Cheng , Guangrui Xia , Hongyu Yu

In this work, we propose the Bilayer Graphene Tunnel Field Effect Transistor (BG-TFET) as a device suitable for fabrication and circuit integration with present-day technology. It provides high Ion/Ioff ratio at ultra-low supply voltage,…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 G. Fiori , G. Iannaccone

We propose and investigate the intrinsically thinnest transistor concept: a monolayer ballistic heterojunction bipolar transistor based on a lateral heterostructure of transition metal dichalcogenides. The device is intrinsically thinner…

Mesoscale and Nanoscale Physics · Physics 2021-06-02 Leonardo Lucchesi , Gaetano Calogero , Gianluca Fiori , Giuseppe Iannaccone

A split gate technique is used to form a lateral quantum dot in a two-dimensional electron gas of a modulation-doped silicon/silicon-germanium heterostructure. e-beam lithography was employed to produce split gates. By applying negative…

A Josephson diode passes current with zero resistance in one direction but is resistive in the other direction. While such an effect has been observed in several platforms, a large and tunable Josephson diode effect has been rare. Here we…

We propose a semi-suspended device structure and construct nanogapped, hysteresis-free field-effect transistors (FETs), based on the van der Waals stacking technique. The structure, which features a semi-suspended channel above a…

Mesoscale and Nanoscale Physics · Physics 2023-06-29 Jiachen Tang , Luhao Liu , Yinjiang Shao , Xinran Wang , Yi Shi , Songlin Li

We study the superconducting properties of a two-dimensional superconductor in the proximity to an electronic topological transition (ETT). In contrast to the 3D case, we find that the superconducting gap at T=0, the critical temperature…

Superconductivity · Physics 2007-05-23 G. G. N. Angilella , E. Piegari , A. A. Varlamov

Over the last decade, progress in wide bandgap, III-V materials systems based on gallium nitride (GaN) has been a major driver in the realization of high power and high frequency electronic devices. Since the highly conductive,…

This work reports the demonstration of ALD-deposited NiO/\b{eta}-Ga2O3 heterojunction diodes (HJDs) on low doped drift layer and highly doped (001) & (100) n+ substrates with experimental observation of a parallel-plane junction electric…

Materials Science · Physics 2025-03-25 Yizheng Liu , Shane M. W. Witsell , John F. Conley , Sriram Krishnamoorthy

This paper presents a new \b{eta}-Ga2O3 junctionless double gate Metal-Oxide-Field-Semiconductor-Effect-Transistor (\b{eta}DG-JL-FET) that a P+ packet embedded in the oxide layer (PO-\b{eta}DG-JL-FET) for high-voltage applications. Our goal…

Applied Physics · Physics 2021-11-29 Dariush Madadi , Ali Asghar Orouji

In this work, we simulate the expected device performance and the scaling perspectives of Carbon nanotube Field Effect Transistors (CNT-FETs), with doped source and drain extensions. The simulations are based on the self-consistent solution…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 G. Fiori , G. Iannaccone , G. Klimeck

We investigate the thermoelectric performance of 2D nanojunctions with gate tunable architectures and varying channel lengths from 3 to 12 nm using a combination of first principles simulations, including density functional theory, DFT with…

Mesoscale and Nanoscale Physics · Physics 2025-10-09 Yu-Chang Chen , Yu-Chen Chang

Three-dimensional electrical capacitance tomography (3D-ECT) has shown promise for visualizing industrial multiphase flows. However, existing 3D-ECT approaches suffer from limited imaging resolution and lack assessment metrics, hampering…

Image and Video Processing · Electrical Eng. & Systems 2023-12-25 Shengnan Wang , Yi Li , Zhou Chen , Yunjie Yang

Solid state electronics relies on the intentional introduction of impurity atoms or dopants into a semiconductor crystal and/or the formation of junctions between different materials (heterojunctions) to create rectifiers, potential…

Mesoscale and Nanoscale Physics · Physics 2017-04-05 Farzan Gity , Lida Ansari , Martin Lanius , Peter Schüffelgen , Gregor Mussler , Detlev Grützmacher , James C. Greer

Mono- and few-layer transition-metal dichalcogenides (TMDCs) provide opportunities for ideal two-dimensional semiconductors for electronic and optoelectronic devices. For electronic devices on TMDCs, it is essential to incorporate n- and/or…

Materials Science · Physics 2019-08-14 Sehoon Oh , June Yeong Lim , Seongil Im , Hyoung Joon Choi