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We study the interference of interacting electrons in toroidal single-wall carbon nanotubes coupled to metallic electrodes by tunnel junctions. The dc conductance shows resonant features as a function of the gate voltage and the magnetic…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Joerg Rollbuehler , Arkadi A. Odintsov

High frequency conductivity of hot electrons in an undoped single walled achiral carbon nanotubes (CNTs) under the influence of ac-dc driven fields is considered. We investigated semiclassically by solving the Boltzmann's transport equation…

Mesoscale and Nanoscale Physics · Physics 2016-04-20 M. Amekpewu , S. Y. Mensah , R. Musah , N. G. Mensah , S. S. Abukari , K. A. Dompreh

We discuss magnetotransport measurements on individual single-wall carbon nanotubes with low contact resistance, performed as a function of temperature and gate voltage. We find that the application of a magnetic field perpendicular to the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 H. T. Man , A. F. Morpurgo

Carbon nanotubes provide a unique system to study one-dimensional quantization phenomena. Scanning tunneling microscopy is used to observe the electronic wave functions that correspond to quantized energy levels in short metallic carbon…

We study the two-electron eigenspectrum of a carbon-nanotube double quantum dot with spin-orbit coupling. Exact calculation are combined with a simple model to provide an intuitive and accurate description of single-particle and interaction…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 J. von Stecher , B. Wunsch , M. Lukin , E. Demler , A. M. Rey

Efficient and controlled charge transport in networks of semiconducting single-walled carbon nanotubes is the basis for their application in electronic devices, especially in field-effect transistors and thermoelectrics. The recent advances…

Applied Physics · Physics 2021-11-19 Nicolas F. Zorn , Jana Zaumseil

When a carbon nanotube is truncated with a certain type of edges, boundary states localized near the edges appear at the fermi level. Starting from lattice models, low energy effective theories are constructed which describe electron…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Shinsei Ryu , Yasuhiro Hatsugai

This work represents the first electro-thermal study of metallic single-wall carbon nanotubes (SWNTs) for interconnect applications. Experimental data and careful modeling reveal that self-heating is of significance in short (1 < L < 10 um)…

Mesoscale and Nanoscale Physics · Physics 2016-11-15 Eric Pop , David Mann , John Reifenberg , Kenneth Goodson , Hongjie Dai

We report results on the rectification properties of a carbon nanotube (CNT) ring transistor, contacted by CNT leads, whose novel features have been recently communicated by Watanabe et al. [Appl. Phys. Lett. 78, 2928 (2001)]. This paper…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 G. Cuniberti , J. Yi , M. Porto

We review the theoretical description of spin-orbit scattering and electron spin resonance in carbon nanotubes. Particular emphasis is laid on the effects of electron-electron interactions. The spin-orbit coupling is derived, and the…

Strongly Correlated Electrons · Physics 2012-09-27 A. De Martino , R. Egger , F. Murphy-Armando , K. Hallberg

The field emission properties of ion irradiated multiwalled carbon nanotubes (MWCNTs) and doublewalled carbon nanotubes (DWCNTs) have been studied. The carbon nanotubes synthesized by a chemical vapor deposition method were irradiated by…

Materials Science · Physics 2014-04-28 P. M. Koinkar , A. Kumar , D. K. Avasthi , M. A. More , Ri-ichi Murakami

We use conducting-tip atomic force microscopy (AFM) to measure local electronic properties of single wall carbon nanotube (SWNT) circuits on insulating substrates. When a voltage is applied to the tip and AFM feedback is used to position…

Mesoscale and Nanoscale Physics · Physics 2016-08-15 M. Freitag , M. Radosavljević , W. Clauss , A. T. Johnson

We use the robust nearest-neighbour tight-binding approximation to study on the same footing interband dipole transitions in narrow-bandgap carbon nanotubes and graphene nanoribbons. It is demonstrated that curvature effects in metallic…

Mesoscale and Nanoscale Physics · Physics 2019-04-30 R. R. Hartmann , V. A. Saroka , M. E. Portnoi

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…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Bakir Babic , Mahdi Iqbal , Christian Schonenberger

Applications based on Single Walled Carbon Nanotube (SWNT) are good example of the great need to continuously develop metrology methods in the field of nanotechnology. Contact and interface properties are key parameters that determine the…

Mesoscale and Nanoscale Physics · Physics 2012-01-23 Julien Buchoux , Ludovic Bellon , Sophie Marsaudon , Jean-Pierre Aimé

Recently, Coulomb blockade physics was observed at room temperature in a carbon nanotube single-electron transistor (H. W. Ch. Postma, et. al., Science 293, 76 (2001)). In this work, we suggest that these devices may be promising for…

Strongly Correlated Electrons · Physics 2007-05-23 Eugene H. Kim , German Sierra , C. Kallin

The electronic properties of carbon nanotubes are investigated in the presence of disorder and a magnetic field parallel or perpendicular to the nanotube axis. In the parallel field geometry, the $\phi_{0}(=hc/e)$-periodic metal-insulator…

Condensed Matter · Physics 2009-10-31 S. Roche , G. Dresselhaus , M. S. Dresselhaus , R. Saito

The conduction of a single-wall carbon nanotube depends on the pitch. If there are an integral number of carbon hexagons per pitch, then the system is periodic along the tube axis and allows "holes" (, and not "electrons",) to move inside…

Mesoscale and Nanoscale Physics · Physics 2010-03-30 S. Fujita , S. Moon , Y. Takato , James McNabb , S. Godoy

We report a novel phenomenon in carbon nanotube (CNT) based devices, the transphonon effects, which resemble the transonic effects in aerodynamics. It is caused by dissipative resonance of nanotube phonons similar to the radial breathing…

Materials Science · Physics 2009-03-12 Zhiping Xu , Quanshui Zheng , Qing Jiang , Chi-Chiu Ma , Yang Zhao , Guanhua Chen , Huajian Gao , Gexue Ren

Persistent currents driven by a static magnetic flux parallel to the carbon nanotube axis are investigated. Owing to the hexagonal symmetry of graphene the Fermi contour expected for a 2D-lattice reduces to two points. However the electron…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 M. Szopa , M. Marganska , E. Zipper