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Quantum interference effects such as weak localization (WL) and universal conductance fluctuations (UCF) normally yield consistent electronic phase-coherence lengths in homogeneous conductors. Here we show that in individual carbon nanotube…

The electrical and optical response of a field-effect device comprising a network of semiconductor-enriched single-wall carbon nanotubes, gated with sodium chloride solution is investigated. Field-effect is demonstrated in a device that…

介观与纳米尺度物理 · 物理学 2010-09-24 Manu Jaiswal , C. S. Suchand Sangeeth , Wei Wang , Ya-Ping Sun , Reghu Menon

{\it Ab initio} density functional theory calculations are performed to investigate the electronic structure of MoS$_2$ armchair nanoribbons in the presence of an external static electric field. Such nanoribbons, which are nonmagnetic and…

介观与纳米尺度物理 · 物理学 2013-08-29 Kapildeb Dolui , Chaitanya Das Pemmaraju , Stefano Sanvito

Carbon nanotubes are a good realization of one-dimensional crystals where basic science and potential nanodevice applications merge. Defects are known to modify the electrical resistance of carbon nanotubes. They can be present in as-grown…

The electronic structure of finite-length armchair carbon nanotubes has been studied using several ab-initio and semi-empirical quantum computational techniques. The additional confinement of the electrons along the tube axis leads to the…

材料科学 · 物理学 2007-05-23 Alain Rochefort , Dennis R. Salahub , Phaedon Avouris

Recent fluorescence spectroscopy experiments on single wall carbon nanotubes reveal substantial deviations of observed absorption and emission energies from predictions of noninteracting models of the electronic structure. Nonetheless, the…

材料科学 · 物理学 2009-11-10 C. L. Kane , E. J. Mele

The linear response transport properties of carbon nanotube quantum dot in the strongly correlated regime are discussed. The finite-U mean field slave boson approach is used to study many-body effects. Magnetic field can rebuilt Kondo…

介观与纳米尺度物理 · 物理学 2018-02-14 D. Krychowski , S. Lipiński

An interacting one-dimensional (1D) electron system is predicted to behave very differently than its higher-dimensional counterparts. Coulomb interactions strongly modify the properties away from those of a Fermi liquid, resulting in a…

介观与纳米尺度物理 · 物理学 2009-10-31 M. Bockrath , D. H. Cobden , J. Lu , A. G. Rinzler , R. E. Smalley , L. Balents , P. L. Mceuen

By means of pseudopotential calculations based on density functional theory (DFT) we studied the effect of hydrogenation on electronic properties of armchair single-wall carbon nanotubes. The calculations demonstrate strong preference for…

材料科学 · 物理学 2015-05-30 Željko Šljivančanin

Electrical transport through single-walled carbon nanotubes (SWNTs) is investigated by using the nearest-neighbor tight-binding model coupled with two electron reservoirs. When the SWNT-electrode coupling is not axially symmetric,…

介观与纳米尺度物理 · 物理学 2007-05-23 Junko Takahashi , Shuichi Tasaki

Resonant manipulation of carbon nanotube valley-spin qubits by an electric field is investigated theoretically. We develop a new analysis of electrically driven spin resonance exploiting fixed physical characteristics of the nanotube: a…

介观与纳米尺度物理 · 物理学 2015-03-24 Ying Li , Simon C. Benjamin , G. Andrew D. Briggs , Edward A. Laird

The transport properties of finite nanotubes placed in a magnetic field parallel to their axes are investigated. Upon including spin-orbit coupling and curvature effects, two main phenomena are analyzed which crucially depend on the tube's…

介观与纳米尺度物理 · 物理学 2011-10-28 Miriam del Valle , Magdalena Marganska , Milena Grifoni

AFM manipulation was used to controllably stretch individual metallic single-walled carbon nanotubes (SWNTs). We have found that SWNTs can sustain elongations as great as 30% without breaking. Scanned gate microscopy and transport…

介观与纳米尺度物理 · 物理学 2009-11-07 D. Bozovic , M. Bockrath , J. H. Hafner , C. M. Lieber , H. Park , M. Tinkham

We report on the influence of low gamma irradiation (10^4 Gy) on the noise properties of individual carbon nanotube (CNT) field-effect transistors (FETs) with different gate configurations and two different dielectric layers, SiO2 and…

On the basis of the spin-polarized density functional theory calculations, we demonstrate that partially-open carbon nanotubes (CNTs) observed in recent experiments have rich electronic and magnetic properties which depend on the degree of…

材料科学 · 物理学 2009-11-16 Bing Huang , Young-Woo Son , Gunn Kim , Wenhui Duan , Jisoon Ihm

We present the results of analytical study and Molecular Dynamics simulation of low energy nonlinear non-stationary dynamics of single-walled carbon nanotubes (CNTs). New phenomena of intensive energy exchange between different parts of CNT…

介观与纳米尺度物理 · 物理学 2014-12-30 Valeri V. Smirnov , Leonid I. Manevitch , Matteo Strozzi , Francesco Pelicano

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…

介观与纳米尺度物理 · 物理学 2009-11-10 S. J. Wind , J. Appenzeller , Ph. Avouris

In a recent paper Liang {\it et al.} [Nature {\bf 411}, 665 (2001)] showed experimentally, that metallic nanotubes, strongly coupled to external electrodes, may act as coherent molecular waveguides for electronic transport. The experimental…

介观与纳米尺度物理 · 物理学 2009-11-07 S. Krompiewski , J. Martinek , J. Barnas

Interaction of single-walled carbon nanotubes with electron donor and acceptor molecules causes significant changes in the electronic and Raman spectra, the relative proportion of the metallic species increasing on electron donation through…

Electronic state modulation of the armchair (6,6) carbon nanotubes filled with a linear assembly of oxygen molecules is addressed theoretically. Ferromagnetic coupling of encapsulated oxygen produces a magnetic field with cylindrical…

介观与纳米尺度物理 · 物理学 2015-05-28 Hiroyuki Shima , Hideo Yoshioka