He

PAW-potentials:

name

valence electrons

frozen core electrons

default

2

0

2 valence electrons

Radial cutoffs and eigenvalues:

id

occ

eig [eV]

cutoff [Bohr]

1s

2

-15.764

1.50

s

0

11.448

1.50

p

0

0.000

1.50

The figure shows convergence of the absolute FCC-energy (blue lines) and BCC-FCC energy difference (orange lines) relative to converged numbers (plane-wave calculation at 1200 eV).

../_images/He.png

mode

E(FCC) [eV/atom]

E(BCC) [eV/atom]

E(BCC)-E(FCC) [eV/atom]

PW(ecut=1200)

-0.005

-0.005

0.000

FD(h=0.12,0.12)

-0.005

-0.005

0.000

LCAO(h=0.12,0.12)

0.153

0.154

0.001

Egg-box errors in finite-difference mode:

grid-spacing [Å]

energy variation [meV]

0.12

0.080

0.15

0.595

0.20

0.670