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We consider the electronic transport properties of phosphorus (P) doped silicon nanowires (SiNWs). By combining ab initio density functional theory (DFT) calculations with a recursive Green's function method, we calculate the conductance…

介观与纳米尺度物理 · 物理学 2008-01-09 Troels Markussen , Riccardo Rurali , Antti-Pekka Jauho , Mads Brandbyge

We demonstrate controllable shift of the threshold voltage and the turn-on voltage in pentacene thin film transistors and rubrene single crystal field effect transistors (FET) by the use of nine organosilanes with different functional…

In this work, we study the electronic and transport properties of phosphorene nanorings in two perpendicular directions (zigzag and armchair directions) in the presence of zigzag metallic source and drain leads. Our results are based on the…

介观与纳米尺度物理 · 物理学 2024-01-10 MohammadAmir Bazrafshan , Farhad Khoeini , Bartlomiej Szafran

We report the transport properties of mechanically exfoliated few-layer SnSe$_{2}$ flakes, whose mobility is found with four probe measurements to be ~ 85 cm$^{2}$V$^{-1}$s$^{-1}$ at 300 K, higher than those of the majority of few-layer…

介观与纳米尺度物理 · 物理学 2016-12-21 Chenglei Guo , Zhen Tian , Yanjun Xiao , Qixi Mi , Jiamin Xue

High performance enhancement mode semiconducting carbon nanotube field-effect transistors (CNTFETs) are obtained by combining ohmic metal-tube contacts, high dielectric constant HfO2 films as gate insulators, and electrostatically doped…

介观与纳米尺度物理 · 物理学 2015-06-24 Ali Javey , Jing Guo , Damon B. Farmer , Qian Wang , Dunwei Wang , Roy G. Gordon , Mark Lundstrom , Hongjie Dai

We utilize an organic polymer buffer layer between graphene and conventional gate dielectrics in top-gated graphene transistors. Unlike other insulators, this dielectric stack does not significantly degrade carrier mobility, allowing for…

Graphene field-effect transistors are fabricated utilizing single-crystal hexagonal boron nitride (h-BN), an insulating isomorph of graphene, as the gate dielectric. The devices exhibit mobility values exceeding 10,000 cm2/V-sec and current…

介观与纳米尺度物理 · 物理学 2016-11-18 I. Meric , C. R. Dean , A. F. Young , J. Hone , P. Kim , K. L. Shepard

Development of new, high quality functional materials has been at the forefront of condensed matter research. The recent advent of two-dimensional black phosphorus has greatly enriched the material base of two-dimensional electron systems.…

We study single electron transport through a graphene quantum dot with magnetic adsorbates. We focus on the relation between the spin order of the adsorbates and the linear conductance of the device. The electronic structure of the graphene…

介观与纳米尺度物理 · 物理学 2013-02-22 J. W. González , F. Delgado , J. Fernández-Rossier

As the conventional silicon metal-oxide-semiconductor field-effect transistor (MOSFET) approaches its scaling limits; many novel device structures are being extensively explored. Among them, the silicon nanowire transistor (SNWT) has…

新兴技术 · 计算机科学 2014-07-10 Mayank Chakraverty

It is well-known that the electric field can induce phase transitions between superconducting, metallic and insulating states in thin-film materials due to its control of the charge carrier density. Since a similar effect on the charge…

超导电性 · 物理学 2023-08-14 Liyu Yin , Yunfei Bai , Ming Zhang , A. A. Shanenko , Yajiang Chen

Here we propose and analyze the behavior of a FET--like switching device, the Mott transition field effect transistor, operating on a novel principle, the Mott metal--insulator transition. The device has FET-like characteristics with a low…

凝聚态物理 · 物理学 2009-10-28 C. Zhou , D. M. Newns , J. A. Misewich , P. C. Pattnaik

We consider multi-terminal transport through a flake of rectangular shape of a two-dimensional topological insulator in the presence of an in-plane magnetic field. This system has been shown to be a second-order topological insulator, thus…

介观与纳米尺度物理 · 物理学 2024-02-21 Joseph Poata , Fabio Taddei , Michele Governale

The development of high-performance multifunctional polymer-based electronic circuits is a major step towards future flexible electronics. Here, we demonstrate a tunable approach to fabricate such devices based on rationally designed…

We present a theoretical framework for the calculation of charge transport through nanowire-based Schottky-barrier field-effect transistors that is conceptually simple but still captures the relevant physical mechanisms of the transport…

介观与纳米尺度物理 · 物理学 2011-07-26 Daijiro Nozaki , Jens Kunstmann , Felix Zörgiebel , Walter M. Weber , Thomas Mikolajick , Gianaurelio Cuniberti

We use a simultaneous flow of ethylene and hydrogen gases to grow single wall carbon nanotubes by chemical vapor deposition. Strong coupling to the gate is inferred from transport measurements for both metallic and semiconducting tubes. At…

介观与纳米尺度物理 · 物理学 2007-05-23 Bakir Babic , Mahdi Iqbal , Christian Schonenberger

The monolayer of black phosphorous, or phosphorene, has recently emerged as a new 2D semiconductor with intriguing highly anisotropic transport properties. Existing calculations of its intrinsic phonon-limited electronic transport…

材料科学 · 物理学 2015-06-24 Bolin Liao , Jiawei Zhou , Bo Qiu , Mildred S. Dresselhaus , Gang Chen

We investigate the quantum transport through a single-wall carbon nanotube connected to leads in the presence of an external radiation field. We analyze the conductance spectrum as a function of the frequency and strength of the field. We…

介观与纳米尺度物理 · 物理学 2009-11-11 P. A. Orellana , M. Pacheco

We propose a simple analytical model of a metal-oxide-semiconductor field-effect transistor with a lateral resonant gate based on the coupled electromechanical equations, which are self-consistently solved in time. All charge densities…

Topological insulators represent a new state of quantum matter attractive to both fundamental physics and technological applications such as spintronics and quantum information processing. In a topological insulator, the bulk energy gap is…