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Volumn 89, Issue 4, 2002, Pages

Charge-Induced Anisotropic Distortions of Semiconducting and Metallic Carbon Nanotubes

Author keywords

[No Author keywords available]

Indexed keywords

ACTUATORS; ANISOTROPY; CHEMICAL BONDS; ELECTROMECHANICAL DEVICES; ELECTRONS; GRAPHITE; KINETIC ENERGY;

EID: 45849155210     PISSN: 00319007     EISSN: 10797114     Source Type: Journal    
DOI: 10.1103/PhysRevLett.89.045503     Document Type: Article
Times cited : (59)

References (17)
  • 6
    • 85038339513 scopus 로고    scopus 로고
    • The energy of the undoped system is assumed to be included in the definition of its equilibrium lattice structure and vibrations; then it is a modulation of the energy of additional charges that is of interest to us
    • The energy of the undoped system is assumed to be included in the definition of its equilibrium lattice structure and vibrations; then it is a modulation of the energy of additional charges that is of interest to us.
  • 8
    • 85038277770 scopus 로고    scopus 로고
    • This implies a uniform distribution of excess charges over the lattice sites and relatively low temperatures. It is well known that one-dimensional electron-phonon systems can be unstable with respect to the Peierls distortion and exhibit formation of nonuniform polaronic distortions. For not very small carbon nanotubes, however, these effects seem practically irrelevant. The estimated transition temperatures
    • This implies a uniform distribution of excess charges over the lattice sites and relatively low temperatures. It is well known that one-dimensional electron-phonon systems can be unstable with respect to the Peierls distortion and exhibit formation of nonuniform polaronic distortions. For not very small carbon nanotubes, however, these effects seem practically irrelevant. The estimated transition temperatures
  • 11
    • 85038287966 scopus 로고    scopus 로고
    • We use the units of length and energy such that the undistorted carbon-carbon bond length (Formula presented) and the bare (isotropic) NNH integral (Formula presented)
    • We use the units of length and energy such that the undistorted carbon-carbon bond length (Formula presented) and the bare (isotropic) NNH integral (Formula presented).
  • 15
    • 85038282448 scopus 로고    scopus 로고
    • Inclusion of the longer range elastic interactions
    • Inclusion of the longer range elastic interactions
  • 16
    • 85038317679 scopus 로고    scopus 로고
    • We expect that thermal excitation of charges into higher lying energy bands will decrease the magnitude of enhanced dimensional changes (compare to the discussed effect of the increased injection level). Such an effect would be more significant for larger tubes. Since the separation between energy bands is large compared with thermal energy at room temperature for not too large nanotubes, we suspect that thermal corrections will be small at room temperature
    • We expect that thermal excitation of charges into higher lying energy bands will decrease the magnitude of enhanced dimensional changes (compare to the discussed effect of the increased injection level). Such an effect would be more significant for larger tubes. Since the separation between energy bands is large compared with thermal energy at room temperature for not too large nanotubes, we suspect that thermal corrections will be small at room temperature.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.