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Volumn 91, Issue 19, 2015, Pages

Changing character of electronic transitions in graphene: From single-particle excitations to plasmons

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EID: 84929590800     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.91.195407     Document Type: Article
Times cited : (69)

References (34)
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    • We have chosen (Equation presented) value so that the spectra of TB-RPA around (Equation presented) are comparable with our results obtained with DFT-RPA.
    • We have chosen (Equation presented) value so that the spectra of TB-RPA around (Equation presented) are comparable with our results obtained with DFT-RPA.
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    • When we have (Equation presented), the point (Equation presented) needs to be treated with care because then the Coulomb interaction (5) is divergent. This can be resolved by expanding the matrix elements (4) for small Q. With this we get an additional Q term in front of the interband matrix element which cancels the divergent (Equation presented) term in the Coulomb interaction when we calculate the dielectric tensor (2).
    • When we have (Equation presented), the point (Equation presented) needs to be treated with care because then the Coulomb interaction (5) is divergent. This can be resolved by expanding the matrix elements (4) for small Q. With this we get an additional Q term in front of the interband matrix element which cancels the divergent (Equation presented) term in the Coulomb interaction when we calculate the dielectric tensor (2).
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.