LDA and GGA Investigations of Some Ground-State Properties and the Compton Profile of Copper with the All-Electron MAPW Method

Table 2

Extremal areas of cross-sections of the Fermi surface in units of the free electron cross section evaluated for 𝑎=3.6030 Å.

	[Ar]vwn	[Ne]vwn	[Ar]pbe	[Ne]pbe	[Ar]pw91	[Ne]pw91	exp.
⟨100⟩belly	.97320	.97318	.97226	.97320	.97285	.97289	.98062
⟨111⟩belly	.94309	.94350	.94268	.94309	.94337	.94398	.94983
⟨111⟩neck	.04032	.03997	.04143	.04032	.04035	.03977	.03555
⟨110⟩dogsbone	.40658	.40684	.40613	.40658	.40670	.40711	.41045
⟨100⟩rosette	.40418	.40410	.40362	.40418	.40392	.40386	.40241