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Volumn 69, Issue 20, 2004, Pages

Ab initio calculation of band-gap renormalization in highly excited GaAs

Author keywords

[No Author keywords available]

Indexed keywords

ARSENIC DERIVATIVE; GALLIUM;

EID: 37649032547     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.69.205204     Document Type: Article
Times cited : (65)

References (26)
  • 1
    • 77956708000 scopus 로고    scopus 로고
    • and references therein
    • D.S. Chemla, Semicond. Semimetals 58, 175 (1999), and references therein.
    • (1999) Semicond. Semimetals , vol.58 , pp. 175
    • Chemla, D.S.1
  • 8
    • 0034405542 scopus 로고    scopus 로고
    • L. Huang, J.P. Callan, E.N. Glezer, and E. Mazur, Phys. Rev. Lett. 80, 185 (1998); J.P. Callan, A.M.T. Kim, L. Huang, and E. Mazur, Chem. Phys. 251, 167 (2000). See also the review paper, S.K. Sundrum and E. Mazur, Nat. Mater. 1, 217 (2002).
    • (2000) Chem. Phys. , vol.251 , pp. 167
    • Callan, J.P.1    Kim, A.M.T.2    Huang, L.3    Mazur, E.4
  • 9
    • 0036979673 scopus 로고    scopus 로고
    • L. Huang, J.P. Callan, E.N. Glezer, and E. Mazur, Phys. Rev. Lett. 80, 185 (1998); J.P. Callan, A.M.T. Kim, L. Huang, and E. Mazur, Chem. Phys. 251, 167 (2000). See also the review paper, S.K. Sundrum and E. Mazur, Nat. Mater. 1, 217 (2002).
    • (2002) Nat. Mater. , vol.1 , pp. 217
    • Sundrum, S.K.1    Mazur, E.2
  • 13
    • 33646665855 scopus 로고    scopus 로고
    • note
    • The physics of electron-hole interaction is left out of this treatment since we focus our attention on the one-particle Green function. For a discussion of such two-particle effects in highly excited GaAs, see Ref. 9.
  • 15
    • 0000452993 scopus 로고
    • L.V. Keldysh, J. Exp. Theor. Phys. 47, 1515 (1964) [Sov. Phys. JETP 20, 1018 (1965)].
    • (1965) Sov. Phys. JETP , vol.20 , pp. 1018
  • 17
    • 33646667759 scopus 로고    scopus 로고
    • note
    • In the equilibrium problem at T = 0, in which one is interested in ground-state expectation values, the contour can extend from t = - ∞ to t = + ∞ because the adiabatic turning-on and-off of the interaction is guaranteed to return the system to its (noninteracting) ground state. This is not true of excited states. For equilibrium problems with T > 0, the Wick rotation affected in the Matsubara treatment renders the problem essentially isomorphic to that of T = 0. For a detailed discussion of equilibrium and non-equilibrium many-body perturbation theoretic techniques, see L. P. Kadanoff and G. Baym, Quantum Statistical Mechanics (W. A. Benjamin, New York, 1962).
  • 25
    • 33646641626 scopus 로고    scopus 로고
    • note
    • We stress that the occupation number distribution f(E) entering our calculation is assumed rather than calculated. In principle, f(E) should be determined self-consistently, but the computational rigors of such a calculation preclude us from doing this here. The f(E) is therefore an input to our calculation of handgap renormalization.
  • 26
    • 33646638502 scopus 로고    scopus 로고
    • note
    • At larger times, changes in the dielectric function were observed, and are believed to be signatures of a nonthermal structural transformation to a metallic amorphous state.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.