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Volumn 90, Issue 9, 2001, Pages 4587-4608

Effective electron mobility in Si inversion layers in metal-oxide-semiconductor systems with a high-κ insulator: The role of remote phonon scattering

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Indexed keywords


EID: 0035504954     PISSN: 00218979     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1405826     Document Type: Article
Times cited : (742)

References (52)
  • 9
    • 0039801400 scopus 로고    scopus 로고
    • note
    • We neglect here additional complications which may arise when dealing with layers of thickness comparable to the lattice constant or the size of the molecular bonds, such as localized/quantized phonon modes and electronic states.
  • 10
    • 0040393903 scopus 로고    scopus 로고
    • note
    • Ft.
  • 11
    • 0040393902 scopus 로고    scopus 로고
    • note
    • As explained in Ref. 7, scattering with the substrate-plasmon component of the excitations is assumed to have no effect on the electron momentum relaxation rate, and so on the mobility, since it involves no direct loss of momentum by the 2DEG.
  • 13
    • 0040393901 scopus 로고    scopus 로고
    • note
    • 15). Presumably, an algebraic proof could also be found.
  • 15
    • 0039801396 scopus 로고    scopus 로고
    • note
    • m = 3.9∈0, we recover the expression (33) of the text. The only remaining algebraic difference is due to the different definition for the gate-plasmon-conlent we have employed, since the definition used in Ref. 7 cannot be extended to the more complicated case of coupled phonon-plasmon excitations considered here. Notice, however, that despite the algebraic equivalence, physically the coupling of plasmons to phonons also alters the strength of the electron/gate-plasmon coupling via the number of dispersion branches present, via a shift of the plasma dispersion, and via a modification of the relative plasmon/phonon content of each branch.
  • 21
  • 22
    • 4243377351 scopus 로고
    • J. I. Gersten, Surf. Sci. 92, 590 (1980); 97, 206 (1980).
    • (1980) Surf. Sci. , vol.97 , pp. 206
  • 30
    • 0035881403 scopus 로고    scopus 로고
    • 01/15/01, 2001 (unpublished)
    • D. A. Neumayer and E. Cartier, J. Appl. Phys. 90, 1801 (2001). 01/15/01, 2001 (unpublished).
    • (2001) J. Appl. Phys. , vol.90 , pp. 1801
    • Neumayer, D.A.1    Cartier, E.2
  • 31
    • 0040987892 scopus 로고    scopus 로고
    • note
    • 1 with the effective mass of the bulk polar material), this coupling constant α represents twice the number of LO phonons constituting the "polaron cloud" surrounding an electron in the bulk polar material. Equivalently, it expresses the ratio between the polaron and the LO-phonon energies. In our context we are more interested in the coupling between interface optical phonons and electrons in the 2DEG. Unfortunately, in this case the corresponding coupling "constant" becomes a functional of the electron wave function in the inversion layer, via a "form factor" or "overlap factor." Thus we have decided to use the bulk expression for α even in our 2D context, as it provides a qualitative measure of the strength of the interaction.
  • 43
    • 0039209303 scopus 로고    scopus 로고
    • private communication
    • A. C. Callegari (private communication).
    • Callegari, A.C.1
  • 52


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.