The electronic structure of MnSi is calculated using the LMTO method.
We show total energy results and densities of states for different lat
tice constants of both paramagnetic and spin-polarized calculations. M
agnetic moments and exchange splittings are given as a function of pre
ssure. The structural stability of the magnetic phase is discussed in
terms of Stoner's criterion and from total energy calculations. The gr
ound state is found to be magnetic for all lattice constants ranging f
rom 8.30 to 9.10 a.u.