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Volumn 107, Issue 20, 1997, Pages 8686-8696

Tunneling dynamics of side chains and defects in proteins, polymer glasses, and OH-doped network glasses

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Indexed keywords


EID: 0000134007     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.475021     Document Type: Article
Times cited : (28)

References (54)
  • 1
    • 0004696572 scopus 로고
    • and references therein
    • F. H. Stillinger, Science 267, 1953 (1995) and references therein.
    • (1995) Science , vol.267 , pp. 1953
    • Stillinger, F.H.1
  • 36
    • 0039815468 scopus 로고    scopus 로고
    • We want to mention that although this formula (12) is sufficient for all practical purposes, the relaxation process itself is not classical for the high barriers needed in the temperature regime of the absorption peak. Instead, relaxation occurs via direct tunneling from many excited levels of the DWP and intrawell vibrational transitions between theses states. The Arrhenius rate (12) has to be seen as an effective rate whose exponential temperature dependence arises from transitions between different vibrational levels of each well via the Orbach process. See, P. Neu and A. Heuer, J. Chem. Phys. 106, 1749 (1997) for more details.
    • (1997) J. Chem. Phys. , vol.106 , pp. 1749
    • Neu, P.1    Heuer, A.2
  • 39
    • 85033306323 scopus 로고    scopus 로고
    • note
    • max gives an expected peak temperature of ∼10 K. Comparing this with the data of Fig. 12 in Ref. 30, one clearly sees that this peak temperature is too low to separate the relaxation peak from the plateau.


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