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We analyze the performance of a recently reported Ge/Si core/shell nanowire transistor using a semiclassical, ballistic transport model and an sp3s*d5 tight-binding treatment of the electronic structure. Comparison of the measured…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Gengchiau Liang , Jie Xiang , Neerav Kharche , Gerhard Klimeck , Charles M. Lieber , Mark Lundstrom

We propose two schemes of field-effect transistor based on gapped armchair graphene nanoribbons connected to metal leads, by introducing sidearms or on-site gate voltages. We make use of the band gap to reach excellent switch-off character.…

Mesoscale and Nanoscale Physics · Physics 2012-05-17 H. Tong , M. W. Wu

We theoretically investigate nonlinear ballistic thermoelectric transport in a superlattice-structured nanowire. By a special choice of nonuniform widths of the superlattice barriers - analogous to anti-reflection coating in optical systems…

Mesoscale and Nanoscale Physics · Physics 2016-09-14 Hossein Karbaschi , John Lovén , Klara Courteaut , Andreas Wacker , Martin Leijnse

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…

Mesoscale and Nanoscale Physics · Physics 2011-07-26 Daijiro Nozaki , Jens Kunstmann , Felix Zörgiebel , Walter M. Weber , Thomas Mikolajick , Gianaurelio Cuniberti

Tunnel Field Effect Transistors (TFET) have extremely low leakage current, exhibit excellent subthreshold swing and are less susceptible to short channel effects. However, TFETs do face certain special challenges, particularly with respect…

Mesoscale and Nanoscale Physics · Physics 2010-10-19 Sneh Saurabh , M. Jagadesh Kumar

Metallic nanoparticles offer possibilities to build basic electric devices with new functionality and improved performance. Due to the small volume and the resulting low self-capacitance, each single nanoparticle exhibits a high charging…

Mesoscale and Nanoscale Physics · Physics 2016-12-16 Hauke Lehmann , Svenja Willing , Sandra Möller , Mirjam Volkmann , Christian Klinke

We develop a robust and versatile platform to define nanostructures at oxide interfaces via patterned top gates. Using LaAlO$_3$/SrTiO$_3$ as a model system, we demonstrate controllable electrostatic confinement of electrons to nanoscale…

Mesoscale and Nanoscale Physics · Physics 2015-04-10 Srijit Goswami , Emre Mulazimoglu , Lieven M. K. Vandersypen , Andrea D. Caviglia

In this paper we propose a modified structure of TFET incorporating ferroelectric oxide as the complementary gate dielectric operating in negative capacitance zone, called the Negative Capacitance Tunnel FET (NCTFET). The proposed device…

General Physics · Physics 2014-05-21 Nadim Chowdhury , S. M. Farhaduzzaman Azad , Quazi D. M. Khosru

We report the observation of channel-width dependent enhancement in nanoscale field effect transistors containing lithographically-patterned silicon nanowires as the conduction channel. These devices behave as conventional…

Other Condensed Matter · Physics 2008-02-18 Xihua Wang , Yu Chen , Mi K. Hong , Shyamsunder Erramilli , Pritiraj Mohanty

We have fabricated carbon nanotube (CN) field-effect transistors with multiple, individually addressable gate segments. The devices exhibit markedly different transistor characteristics when switched using gate segments controlling the…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 S. J. Wind , J. Appenzeller , Ph. Avouris

Semiconductor nanowires can be utilized to create quantum dot qubits. The formation of quantum dots is typically achieved by means of bottom gates created by a lift-off process. As an alternative, we fabricated flat buried bottom gate…

We propose an analytical device model for a graphene nanoribbon field-effect transistor (GNR-FET). The GNR-FET under consideration is based on a heterostructure which consists of an array of nanoribbons clad between the highly conducting…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 M. Ryzhii , A. Satou , V. Ryzhii , T. Otsuji

Transistors, regardless of their size, rely on electrical gates to control the conductance between source and drain contacts. In atomic-scale transistors, this conductance is exquisitely sensitive to single electrons hopping via individual…

We have fabricated a sub-micron-sized structure consisting of an InAs-based 2DEG, two narrow Nb leads and a gate, where the indirect ballistic transport between the non-oppositely superconducting contacts can be controlled by the voltage…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 G. Bastian , H. Takayanagi

We report on the successful synthesis and low-temperature electron transport investigations of a new form of material - Bi2O2Se semiconducting nanowires. Gate-tunable 0- and $\pi$-h/e (h is the Planck constant and e the elementary charge)…

Mesoscale and Nanoscale Physics · Physics 2019-12-20 Jianghua Ying , Guang Yang , Zhaozheng Lyu , Guangtong Liu , Zhongqing Ji , Jie Fan , Changli Yang , Xiunian Jing , Huaixin Yang , Li Lu , Fanming Qu

We present a simple and scalable technique for the fabrication of solution processed & local gated carbon nanotube field effect transistors (CNT-FETs). The approach is based on directed assembly of individual single wall carbon nanotube…

Materials Science · Physics 2009-11-13 Paul Stokes , Saiful I. Khondaker

A common issue in low temperature measurements of enhancement-mode metal-oxide-semiconductor (MOS) field-effect transistors (FETs) in the low electron density regime is the high contact resistance dominating the device impedance. In that…

Mesoscale and Nanoscale Physics · Physics 2011-10-10 Laurens H. Willems Van Beveren , Kuan Y. Tan , Nai-Shyan Lai , Oleh Klochan , Andrew S. Dzurak , Alex R. Hamilton

In this paper, we have proposed a new design technique of BCD Adder using newly constructed reversible gates are based on NMOS with pass transistor gates, where the conventional reversible gates are based on CMOS with transmission gates. We…

Other Computer Science · Computer Science 2012-01-13 Md. Sazzad Hossain , Md. Rashedul Hasan Rakib , Md. Motiur Rahman , A. S. M. Delowar Hossain , Md. Minul Hasan

In this paper, we have worked out a pseudo two dimensional (2D) analytical model for surface potential and drain current of a long channel p-type Dual Material Gate (DMG) Gate All-Around (GAA) nanowire Tunneling Field Effect Transistor…

Mesoscale and Nanoscale Physics · Physics 2014-06-23 Rajat Vishnoi , M. Jagadesh Kumar

Quantum mechanical effects induced by the miniaturization of complementary metal-oxide-semiconductor (CMOS) technology hamper the performance and scalability prospects of field-effect transistors. However, those quantum effects, such as…