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4
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85038284872
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D. D. Vvedensky, in Unoccupied Electronic States—Fundamentals for XANES, EELS, IPS and BIS, edited by J. C. Fuggle and J. E. Inglesfield, Topics in Applied Physics Vol. 69 (Springer-Verlag, Berlin, 1992), Chap. 4, pp. 139–176.
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D. D. Vvedensky, in Unoccupied Electronic States—Fundamentals for XANES, EELS, IPS and BIS, edited by J. C. Fuggle and J. E. Inglesfield, Topics in Applied Physics Vol. 69 (Springer-Verlag, Berlin, 1992), Chap. 4, pp. 139–176.
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5
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85038272398
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R. W. Godby, in Unoccupied Electronic States—Fundamentals for XANES, EELS, IPS and BIS (Ref. 4), Chap. 3, pp. 51–87.
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R. W. Godby, in Unoccupied Electronic States—Fundamentals for XANES, EELS, IPS and BIS (Ref. 4), Chap. 3, pp. 51–87.
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7
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11944256577
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M. C. Payne, M. P. Tetev, D. C. Allan, T. A. Arias, and J. D. Joannopoulos, Rev. Mod. Phys. 64, 1045 (1992).
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(1992)
Rev. Mod. Phys.
, vol.64
, pp. 1045
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Payne, M.C.1
Tetev, M.P.2
Allan, D.C.3
Arias, T.A.4
Joannopoulos, J.D.5
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20
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85038312947
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If (Formula presented) (where (Formula presented) are the normalized vectors in the direction of maximum curvature for bands (Formula presented) and (Formula presented) assumed parallel rather than antiparallel) and (Formula presented) (where γ is the ratio between the maximum curvatures of the two bands—taken to be greater than unity, (Formula presented) is the normalized direction of maximum curvature—now assumed to be the same for both bands, (Formula presented) is the energy difference between the two bands in electron volts, and (Formula presented) is (Formula presented) in units of inverse angstroms) the bands (Formula presented) and (Formula presented) are taken to be kissing.
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If (Formula presented) (where (Formula presented) are the normalized vectors in the direction of maximum curvature for bands (Formula presented) and (Formula presented) assumed parallel rather than antiparallel) and (Formula presented) (where γ is the ratio between the maximum curvatures of the two bands—taken to be greater than unity, (Formula presented) is the normalized direction of maximum curvature—now assumed to be the same for both bands, (Formula presented) is the energy difference between the two bands in electron volts, and (Formula presented) is (Formula presented) in units of inverse angstroms) the bands (Formula presented) and (Formula presented) are taken to be kissing.
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21
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85038299393
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C. J. Pickard, Ph.D. thesis, Cambridge University, Cavendish Laboratory, 1997.
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C. J. Pickard, Ph.D. thesis, Cambridge University, Cavendish Laboratory, 1997.
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