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Volumn 81, Issue 7, 2010, Pages

Extra Dirac points in the energy spectrum for superlattices on single-layer graphene

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EID: 77954877026     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.81.075438     Document Type: Article
Times cited : (270)

References (21)
  • 2
    • 0040858874 scopus 로고
    • 10.1007/BF01339716
    • O. Klein, Z. Phys. 53, 157 (1929). 10.1007/BF01339716
    • (1929) Z. Phys. , vol.53 , pp. 157
    • Klein, O.1
  • 6
    • 62049085404 scopus 로고    scopus 로고
    • 10.1038/nphys1198
    • A. F. Young and P. Kim, Nat. Phys. 5, 222 (2009). 10.1038/nphys1198
    • (2009) Nat. Phys. , vol.5 , pp. 222
    • Young, A.F.1    Kim, P.2
  • 8
    • 33644938908 scopus 로고    scopus 로고
    • 10.1103/PhysRevB.72.085217;
    • W. Zawadzki, Phys. Rev. B 72, 085217 (2005) 10.1103/PhysRevB.72.085217
    • (2005) Phys. Rev. B , vol.72 , pp. 085217
    • Zawadzki, W.1
  • 15
    • 77954868503 scopus 로고    scopus 로고
    • In Ref. a nearest-neighbor, tight-binding method was applied with a large rectangular supercell along a sinusoidal potential as basis. Extra touching points at the Fermi level were observed and, together with the group velocity in their vicinity, their influence on the density of states was demonstrated.
    • In Ref. a nearest-neighbor, tight-binding method was applied with a large rectangular supercell along a sinusoidal potential as basis. Extra touching points at the Fermi level were observed and, together with the group velocity in their vicinity, their influence on the density of states was demonstrated.
  • 17
    • 68849129288 scopus 로고    scopus 로고
    • 10.1103/PhysRevLett.103.046809
    • L. Brey and H. A. Fertig, Phys. Rev. Lett. 103, 046809 (2009). 10.1103/PhysRevLett.103.046809
    • (2009) Phys. Rev. Lett. , vol.103 , pp. 046809
    • Brey, L.1    Fertig, H.A.2
  • 20
    • 77954877435 scopus 로고    scopus 로고
    • The implicit function theorem cannot be applied if the gradient (Jacobian) of the dispersion relation is zero. This occurs because of the crossing of the bands at these points: from the form of the derivatives, too long to write down, we can see that they are both zero if sin (λ Ww ) =sin (Λ Wb ) =0 while cos (λ Ww ) =cos (Λ Wb ).
    • The implicit function theorem cannot be applied if the gradient (Jacobian) of the dispersion relation is zero. This occurs because of the crossing of the bands at these points: from the form of the derivatives, too long to write down, we can see that they are both zero if sin (λ W w) = sin (Λ W b) = 0 while cos (λ W w) = cos (Λ W b).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.