T. Matsushita et al., ANGLE-RESOLVED PHOTOEMISSION-STUDY OF M(X)TIS(2) (M=MN, FE, CO, NI, X=1 3, 1/4)/, Journal of electron spectroscopy and related phenomena, 78, 1996, pp. 477-480
We have studied the valence band structures of MxTiS2 intercalation co
mpounds and their mother crystal 1T-TiS2 by means of angle-resolved ul
tra-violet photoemission spectroscopy. Dispersions of some bands are s
trongly modified depending upon the individual M species. This might b
e caused by the hybridization between the S 3p and the M 3d ''e(g)'' s
tates. A new band is observed at the binding energy(E(B)) of 1.0eV in
Ni1/3TiS2 and at E(B)=0.5eV in Co1/3TiS2. This band has an almost flat
dispersion and any corresponding band is not observed in Fe1/3TiS2 an
d Mn1/4TiS2. We interpret it as the bonding state between the Ti 3d(z)
(2) and M 3d(z)(2) states composed of the ''t(2g)'' state.