TITLE

Measurements on quantum capacitance of individual single walled carbon nanotubes

AUTHOR(S)
Junfeng Dai; Jun Li; Hualing Zeng; Xiaodong Cui
PUB. DATE
March 2009
SOURCE
Applied Physics Letters;3/2/2009, Vol. 94 Issue 9, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report measurements of the quantum capacitance of individual semiconducting and small band gap single walled carbon nanotubes (SWNTs). The observed quantum capacitance, 82 aF/μm for a semiconducting SWNT with chiral index (16,8) and 10.3 aF/μm for a small band gap SWNT upon Fermi level lying at the first subband are remarkably smaller than those originating from the density of states. We attribute the discrepancy to a strong electron correlation in SWNTs and derive the Luttinger parameter g of 0.25–0.3 for the (16,8) SWNT and of 0.32 for a small band gap SWNT.
ACCESSION #
36940950

 

Related Articles

  • Radial thermal expansion of pure and Xe-saturated bundles of single-walled carbon nanotubes at low temperatures. Dolbin, A. V.; Esel’son, V. B.; Gavrilko, V. G.; Manzhelii, V. G.; Popov, S. N.; Vinnikov, N. A.; Danilenko, N. I.; Sundqvist, B. // Low Temperature Physics;Jun2009, Vol. 35 Issue 6, p484 

    The radial thermal expansion coefficient αr of pure and Xe-saturated bundles of single-walled carbon nanotubes (CNTs) is measured in the interval 2.2–120 K. The coefficient is positive above T=5.5 K and negative at lower temperatures. The experiment was done using a low-temperature...

  • Exactly Solved Model for 4He Adsorption on Carbon Nanotube Bundles. T. Antsygina; I. Poltavsky; K. Chishko // Journal of Low Temperature Physics;Sep2007, Vol. 148 Issue 5/6, p821 

    Abstract   The thermodynamics of atomic deposit adsorbed in grooves, on outer surface, and into intertube channels of a closed-end carbon nanobundle has been investigated theoretically. The grand canonical partition function for the groove subsystem was found within the...

  • Joule heating in single-walled carbon nanotubes. Ragab, Tarek; Basaran, Cemal // Journal of Applied Physics;Sep2009, Vol. 106 Issue 6, p063705-1 

    Joule heating in single-walled carbon nanotubes (CNTs) using a quantum mechanical approach is presented in this paper. The modeling is based on the energy transfer between the electrons and both acoustic and optical phonons. In this formulation, only the knowledge of the full energy dispersion...

  • Spatial resolution of the capacitance-voltage profiling technique on semiconductors with quantum confinement. Schubert, E. F.; Kopf, R. F.; Kuo, J. M.; Luftman, H. S.; Garbinski, P. A. // Applied Physics Letters;7/30/1990, Vol. 57 Issue 5, p497 

    The spatial resolution of the capacitance-voltage profiling technique on semiconductors with one-dimensional quantum confinement is shown to be given by the spatial extent of the wave function. The Debye length limitation does not apply. Capacitance-voltage profiles on δ-doped GaAs of density...

  • Effects of size constraint on water filling process in nanotube. Lingyi Meng; Qikai Li; Zhigang Shuai // Journal of Chemical Physics;4/7/2008, Vol. 128 Issue 13, p134703 

    Molecular dynamics (MD) simulation and the potential of mean force (PMF) analysis are used to investigate the structural properties of water molecules near the end of nanotube for the whole process from the initial water filling up to the configuration stabilization inside the carbon nanotubes...

  • Quantum phenomena in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with 3He. A giant isotope effect. Dolbin, A. V.; Esel'son, V. B.; Gavrilko, V. G.; Manzhelii, V. G.; Vinnikov, N. A.; Popov, S. N.; Sundqvist, B. // Low Temperature Physics;Jun2011, Vol. 37 Issue 6, p544 

    The coefficient of radial thermal expansion αr of bundles of single-walled carbon nanotubes saturated with 3He up to a molar concentration of 9.4% has been studied over temperatures of 2.1-9.5 K by high-sensitivity capacitance dilatometry. In the interval 2.1-7 K a negative αr was...

  • Enhanced electron correlation in rare-earth doped Ca3Co4O9. Yang Wang; Xu, Luxian; Yu Sui; Xianji Wang; Jinguang Cheng; Wenhui Su // Applied Physics Letters;8/9/2010, Vol. 97 Issue 6, p062114 

    Thermoelectric and thermodynamic properties of a series of Ca-site rare-earth R3+ doped Ca3Co4O9 were investigated. For a fixed doping level, with the reduction in R3+ radius, thermopower is found to gradually increase despite the carrier concentration remains unchanged. The scaling behavior...

  • Variable capacitance mechanisms in carbon nanotubes. Dragoman, D.; Dragoman, M. // Journal of Applied Physics;2/1/2007, Vol. 101 Issue 3, p036111 

    This paper demonstrates that semiconducting carbon nanotubes can be used to implement a room temperature capacitance tunable via an external bias, i.e., a varactor, which is a key element in any communication system working up to a few terahertz. The paper describes the implementation of two...

  • Quantum oscillations as the tool for study of new functional materials (Review Article). Gusynin, V. P.; Loktev, V. M.; Luk'yanchuk, I. A.; Sharapov, S. G.; Varlamov, A. A. // Low Temperature Physics;Apr2014, Vol. 40 Issue 4, p270 

    We present an overview of our recent results on quantum magnetic oscillations in new functional materials. We begin with the Lifshitz and Kosevich approach for quasi-2D layered materials and obtain general formulas for the oscillatory parts of the grand thermodynamic potential and magnetization....

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics