cohesive energy
Posted: Fri Dec 08, 2006 7:30 am
hello,everyone
I try to calculate cohesive energy of some TM-Al alloys ,so I have to calculate the groundstate energy of some TM atoms.
This is the INCAR file:
SYSTEM = Mn: atom
Electronic minimization
ISYM = 0
ISPIN = 2
VOSKOWN = 1
ISMEAR=0
SIGMA=0.00001
AMIX = 0.2
BMIX = 0.0001
NELM=20
ICHARG=1
LWAVE=.FALSE.
NPAR=1
NSIM=1
And,I execute vasp twice ,but the value of "energy without entropy" is 0.2ev bigger than the value in table 4 of manual(correction to the energy of the atom for the US-PP).
Would you help me to find out what's wrong with this calculation? Thank you very much!
<span class='smallblacktext'>[ Edited ]</span>
I try to calculate cohesive energy of some TM-Al alloys ,so I have to calculate the groundstate energy of some TM atoms.
This is the INCAR file:
SYSTEM = Mn: atom
Electronic minimization
ISYM = 0
ISPIN = 2
VOSKOWN = 1
ISMEAR=0
SIGMA=0.00001
AMIX = 0.2
BMIX = 0.0001
NELM=20
ICHARG=1
LWAVE=.FALSE.
NPAR=1
NSIM=1
And,I execute vasp twice ,but the value of "energy without entropy" is 0.2ev bigger than the value in table 4 of manual(correction to the energy of the atom for the US-PP).
Would you help me to find out what's wrong with this calculation? Thank you very much!
<span class='smallblacktext'>[ Edited ]</span>