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Volumn 37, Issue 7, 1998, Pages 4109-4114

Reflectance difference spectra calculations of GaAs(001) As- and Ga-rich reconstruction surface structures

Author keywords

(001); Anisotropy; As rich surfaces; Dimer; Ga rich surfaces; GaAs; Lone pair; RDS; Sp3s*; Surface; Tight binding

Indexed keywords

ANISOTROPY; CALCULATIONS; SPECTRUM ANALYSIS; SURFACES;

EID: 0032119472     PISSN: 00214922     EISSN: None     Source Type: Journal    
DOI: 10.1143/jjap.37.4109     Document Type: Article
Times cited : (37)

References (36)
  • 27
    • 3743075165 scopus 로고    scopus 로고
    • note
    • It is an interesting fact that the practical magnitude of Vppa is same for As and Ga dimers, because the length of As dimer obtained by our ab initio calculation is longer than the length of Ga dimer as seen in Table II.
  • 28
    • 3743142043 scopus 로고    scopus 로고
    • note
    • Compared to the ab initio calculation, the localization of surface states is slightly strong in tight-binding results, especially for Ga-rich (4 × 2)β1 reconstruction.
  • 29
    • 3743092942 scopus 로고    scopus 로고
    • note
    • Ga surfaces generally show smaller and broader peaks than As surfaces due to the weak localization of surface states.
  • 30
    • 3743069664 scopus 로고    scopus 로고
    • note
    • In order to exclude numerical error due to the Brillouin zone integration, the total spectra are linearly smoothed with an energy width of 0.34 eV.
  • 31
    • 3743126533 scopus 로고    scopus 로고
    • note
    • The only exception is the c(4 × 4) reconstruction, where the As dimers form an array.
  • 33
    • 85088001863 scopus 로고    scopus 로고
    • note
    • 3c state character of bulk GaAs. Therefore, this state has odd parity symmetry along the [110] direction and the transition from occupied As-lone-pair states is possible.
  • 34
    • 3743131042 scopus 로고    scopus 로고
    • note
    • The Ga-dimer transition of the third top layer also contributes to the negative peak at 2 eV in (4 × 2)β2.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.