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Volumn 81, Issue 7, 2010, Pages

Density functional perturbation theory within the projector augmented wave method

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EID: 77954858570     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.81.075123     Document Type: Article
Times cited : (42)

References (40)
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    • To simplify the notation, in this paper, we give only the expressions for insulators.
    • To simplify the notation, in this paper, we give only the expressions for insulators.
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    • The composite index L explained in Ref. is omitted here, although it is used in the code.
    • The composite index L explained in Ref. is omitted here, although it is used in the code.
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    • The derivatives of this term do not change in the present approach and are not discussed in the paper.
    • The derivatives of this term do not change in the present approach and are not discussed in the paper.
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    • See http://www.quantum-espresso.org
    • See http://www.quantum-espresso.org
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    • I started from the ground state PAW implementation present in QE version 4.0.3, due to (unpublished).
    • I started from the ground state PAW implementation present in QE version 4.0.3, due to L. Paulatto, S. de Gironcoli, G. Fratesi, and R. Mazzarello (unpublished).
    • Paulatto, L.1    De Gironcoli, S.2    Fratesi, G.3    Mazzarello, R.4
  • 26
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    • US-PPs BEC are due to (unpublished).
    • US-PPs BEC are due to G. Deinzer and S. de Gironcoli (unpublished).
    • Deinzer, G.1    De Gironcoli, S.2
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  • 29
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    • PAW PPs have been generated with the valence electronic configurations: 1 s2 (H), 2 s2 2 p2 (C), 2 s2 2 p4 (O), 3 d6.5 4 s1.5 (Fe). The core radii (in Bohr a.u.) are: H rs =1.0, rp =0.75 ( p is local), C rs =1.3, rp =1.45, rd =1.1 ( d is local), O rs =1.35, rp =1.35, rd =1.3 ( d is local), Fe rs =2.2, rp =2.2, rd =1.8. The nonlocal channels are fitted at the eigenvalue and at Ε=0.05Ry in H, C, and O and at Ε=6.3Ry (s), Ε=6.5Ry (p) in Fe. The unbound d channel at Ε=0.10 (0.15) [-0.3 ] Ry in C (O) [Fe]. NLCC is used in C, O, and Fe ( rc =0.8,0.7,1.2 ). In Fe the local potential is the all-electron potential smoothed before r=2.1a.u.. PAW-PPs are generated by the ld1 atomic code using a PAW implementation due mainly to (unpublished).
    • PAW PPs have been generated with the valence electronic configurations: 1 s 2 (H), 2 s 2 2 p 2 (C), 2 s 2 2 p 4 (O), 3 d 6.5 4 s 1.5 (Fe). The core radii (in Bohr a.u.) are: H r s = 1.0, r p = 0.75 (p is local), C r s = 1.3, r p = 1.45, r d = 1.1 (d is local), O r s = 1.35, r p = 1.35, r d = 1.3 (d is local), Fe r s = 2.2, r p = 2.2, r d = 1.8. The nonlocal channels are fitted at the eigenvalue and at Ε = 0.05 Ry in H, C, and O and at Ε = 6.3 Ry (s), Ε = 6.5 Ry (p) in Fe. The unbound d channel at Ε = 0.10 (0.15) [- 0.3] Ry in C (O) [Fe]. NLCC is used in C, O, and Fe (r c = 0.8, 0.7, 1.2). In Fe the local potential is the all-electron potential smoothed before r = 2.1 a. u.. PAW-PPs are generated by the ld1 atomic code using a PAW implementation due mainly to G. Fratesi (unpublished).
    • Fratesi, G.1
  • 31
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    • Data have been taken from the NIST-CCCB
    • Data have been taken from the NIST-CCCB (http://cccbdb.nist.gov/). The theoretical frequencies have been obtained by using the a u g - c c - p V T Z basis.
  • 33
    • 77954842165 scopus 로고    scopus 로고
    • Note that in QE, the printed forces are corrected so that the total force vanishes exactly. In the frozen phonon test this correction has not been used and the dynamical matrix has not been corrected to impose the acoustic sum rule.
    • Note that in QE, the printed forces are corrected so that the total force vanishes exactly. In the frozen phonon test this correction has not been used and the dynamical matrix has not been corrected to impose the acoustic sum rule.
  • 35


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