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Volumn 80, Issue 24, 2009, Pages

Ultrafast vibrational motion of carbon nanotubes in different pH environments

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EID: 77954695601     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.80.245428     Document Type: Article
Times cited : (25)

References (36)
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    • T. Hertel and G. Moos, Phys. Rev. Lett. 84, 5002 (2000). 10.1103/PhysRevLett.84.5002
    • (2000) Phys. Rev. Lett. , vol.84 , pp. 5002
    • Hertel, T.1    Moos, G.2
  • 18
    • 77954743309 scopus 로고    scopus 로고
    • First, we fitted the time-domain data in Fig. with a double-exponential function for the time window of [0,∞ ]. The residual of the fit showed satisfactory nice reproduction of the carrier response. After that, we subtracted the double-exponential function from the time-domain data. Thus, we have obtained only oscillatory parts of the time-domain signal (Fig. ) for the time window of [0,∞ ]
    • First, we fitted the time-domain data in Fig. with a double-exponential function for the time window of [0, ∞]. The residual of the fit showed satisfactory nice reproduction of the carrier response. After that, we subtracted the double-exponential function from the time-domain data. Thus, we have obtained only oscillatory parts of the time-domain signal (Fig.) for the time window of [0, ∞].
  • 26
    • 33646202250 scopus 로고
    • 10.1103/PhysRev.93.632
    • E. Burstein, Phys. Rev. 93, 632 (1954). 10.1103/PhysRev.93.632
    • (1954) Phys. Rev. , vol.93 , pp. 632
    • Burstein, E.1
  • 30
    • 77954741902 scopus 로고    scopus 로고
    • In general, the damping (the inverse of the dephasing time) can be expressed by γtotal = γ0 + γe-ph + γinhomo, where γ0 is the temperature-dependent anharmonic decay rate, γe-ph is the electron-phonon damping, and γinhomo is the inhomogeneous damping. When the pH value is varied γe-ph is most sensitive while γinhomo dominates the difference in the dephasing time between the lower and the higher RBMs
    • In general, the damping (the inverse of the dephasing time) can be expressed by γ t o t a l = γ 0 + γ e - p h + γ i n h o m o, where γ 0 is the temperature-dependent anharmonic decay rate, γ e - p h is the electron-phonon damping, and γ i n h o m o is the inhomogeneous damping. When the pH value is varied γ e - p h is most sensitive while γ i n h o m o dominates the difference in the dephasing time between the lower and the higher RBMs.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.