K

PAW-potentials:

name

valence electrons

frozen core electrons

default

9

10

9 valence electrons

Radial cutoffs and eigenvalues:

id

occ

eig [eV]

cutoff [Bohr]

3s

2

-35.338

2.12

4s

1

-2.319

2.12

3p

6

-18.813

2.09

p

0

8.398

2.09

d

0

0.000

1.77

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/K.png

mode

E(FCC) [eV/atom]

E(BCC) [eV/atom]

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

PW(ecut=1200)

-1.251

-1.235

0.016

FD(h=0.12,0.12)

-1.251

-1.235

0.016

LCAO(h=0.12,0.12)

-0.950

-0.938

0.012

Egg-box errors in finite-difference mode:

grid-spacing [Å]

energy variation [meV]

0.12

0.042

0.14

0.665

0.16

0.845

0.19

0.062