Available pseudopotentials:

Si.pbe-rrkj.UPF   (details)

	 Perdew-Burke-Ernzerhof (PBE) exch-corr
	 Rabe Rappe Kaxiras Joannopoulos (norm-conserving)

Si.pz-vbc.UPF   (details)

	 Perdew-Zunger (LDA) exch-corr
	 Von Barth-Car (direct fit)

Si.pbe-n-van.UPF   (details)

	 Perdew-Burke-Ernzerhof (PBE) exch-corr
	 nonlinear core-correction
	 Vanderbilt ultrasoft

Si.pw91-n-van.UPF   (details)

	 Perdew-Wang 91 gradient-corrected functional
	 nonlinear core-correction
	 Vanderbilt ultrasoft