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We investigate the electronic transport through a suspended carbon-nanotube quantum dot. In the presence of a magnetic field perpendicular to the nanotube and a nearby metallic gate, two forces act on the electrons: the Laplace and the…

Mesoscale and Nanoscale Physics · Physics 2012-07-19 Gianluca Rastelli , Manuel Houzet , Leonid I. Glazman , Fabio Pistolesi

Using low-resistance electrical contacts, we have measured the intrinsic high-field transport properties of metallic single-wall carbon nanotubes. Individual nanotubes appear to be able to carry currents with a density exceeding 10^9…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Zhen Yao , Charles L. Kane , Cees Dekker

We have contacted single wall carbon nanotubes grown by chemical vapor deposition to superconducting Ti/Al/Ti electrodes. The device, we here report on is in the Kondo regime exhibiting a four-fold shell structure, where a clear signature…

Superconductivity · Physics 2007-05-23 K. Grove-Rasmussen , H. Ingerslev Jørgensen , P. E. Lindelof

We study theoretically the electron transport properties in carbon nanotubes under the influence of an external electric field E(t) using Boltzmann's equation. The current-density equation is derived. Negative differential conductivity is…

Mesoscale and Nanoscale Physics · Physics 2011-01-31 S. S. Abukari , S. Y. Mensah N. G. Mensah , K. W. Adu , K. A. Dompreh , A. K. Twum

Nanoscale resonators that oscillate at high frequencies are useful in many measurement applications. We studied a high-quality mechanical resonator made from a suspended carbon nanotube driven into motion by applying a periodic radio…

Mesoscale and Nanoscale Physics · Physics 2010-01-27 G. A. Steele , A. K. Huettel , B. Witkamp , M. Poot , H. B. Meerwaldt , L. P. Kouwenhoven , H. S. J. van der Zant

The low-energy theory for single-wall carbon nanotubes including Coulomb interactions is derived and analyzed. It describes two fermion chains without interchain hopping but coupled in a specific way by the interaction. The strong-coupling…

Condensed Matter · Physics 2009-10-30 Reinhold Egger , Alexander O. Gogolin

We investigate the Josephson current in a single wall carbon nanotube connected to superconducting electrodes. We focus on the parameter regime in which transport is dominated by Kondo physics. A sizeable supercurrent is observed for odd…

Mesoscale and Nanoscale Physics · Physics 2010-12-23 A. Eichler , R. Deblock , M. Weiss , C. Karrasch , V. Meden , C. Schonenberger , H. Bouchiat

We derive the effective low-energy theory for single-wall carbon nanotubes including the Coulomb interactions among electrons. The generic model found here consists of two spin-1/2 fermion chains which are coupled by the interaction. We…

Strongly Correlated Electrons · Physics 2009-10-31 Reinhold Egger , Alexander O. Gogolin

Single wall carbon nanotubes cooled to cryogenic temperatures are outstanding electronic as well as nano-electromechanical model systems. To probe a largely unperturbed system, we measure a suspended carbon-nanotube device where the…

Mesoscale and Nanoscale Physics · Physics 2019-06-26 K. J. G. Götz , F. J. Schupp , A. K. Hüttel

We study the interfacial structure, stability, and elastic properties of composite carbon films containing nanotubes. Our Monte Carlo simulations show that Van der Waals forces play a vital role in shaping up the interfacial geometry,…

Materials Science · Physics 2009-11-11 M. G. Fyta , P. C. Kelires

We consider the effects of Coulomb interactions on single-wall carbon nanotubes using an on-site Hubbard interaction, u. For the (N,N) armchair tubes the low energy theory is shown to be identical to a 2-chain Hubbard model at half-filling,…

Strongly Correlated Electrons · Physics 2009-10-28 Leon Balents , Matthew P. A. Fisher

We use a multiscale procedure to derive a simple continuum model of multiwalled carbon nanotubes that takes into account both strong covalent bonds within graphene layers and weak bonds between atoms in different layers. The model predicts…

Materials Science · Physics 2008-06-09 Dmitry Golovaty , Shannon Talbott

Electronic properties of metal-finite semiconducting carbon nanotube interfaces are studied as a function of the nanotube length using a self-consistent tight-binding theory. We find that the shape of the potential barrier depends on the…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Yongqiang Xue , Mark A. Ratner

We have contacted single-walled carbon nanotubes after aligning the tubes by the use of surface acoustic waves. The acoustoelectric current has been measured at 4.2 K and a probing of the low-dimensional electronic states by the surface…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 J. Ebbecke , C. J. Strobl , A. Wixforth

The electron-electron interaction in carbon nanostructures was studied. A new method which allows to determine the electron-electron interaction constant $\lambda_c$ from the analysis of quantum correction to the magnetic susceptibility and…

We study a general model describing a self-detecting single electron transistor realized by a suspended carbon nanotube actuated by a nearby antenna. The main features of the device, recently observed in a number of experiments, are…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 A. Nocera , C. A. Perroni , V. Marigliano Ramaglia , V. Cataudella

We predict new forms of carbon consisting of one and two dimensional networks of interlinked single wall carbon nanotubes, some of which are energetically more stable than van der Waals packing of the nanotubes on a hexagonal lattice. These…

Materials Science · Physics 2009-10-31 T. Yildirim , O. Gulseren , C. Kilic , S. Ciraci

The article reviews recent progress in the theoretical understanding of near-field surface electromagnetic phenomena in pristine and atomically doped carbon nanotubes. The phenomena involving strong coupling effects are outlined. They are…

Mesoscale and Nanoscale Physics · Physics 2010-11-01 I. V. Bondarev

Poor screening of the long-range Coulomb interaction in one-dimensional carbon nanotubes results in a peculiar picture of contact phenomena. Being brought to a contact with a metal, conducting nanotube accumulates electric charge whose…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Arkadi A. Odintsov , Yasuhiro Tokura

For the first time, an approach is suggested for the quantitative description of the electronic structure of single-walled carbon nanotubes and the prediction of active sites for the tube controlled functionalization in view of the tube…

Materials Science · Physics 2007-09-24 Elena F. Sheka , Leonid A. Chernozatonskii