Electronic structure of NiS$_{1-x}$Se$_x$ across the phase transition
arXiv:cond-mat/9803110 · doi:10.1103/PhysRevLett.80.1284
Abstract
We report very highly resolved photoemission spectra of NiS(1-x)Se(x) across the so-called metal-insulator transition as a function of temperature as well as composition. The present results convincingly demonstrate that the low temperature, antiferromagnetic phase is metallic, with a reduced density of states at E$_F$. This decrease is possibly due to the opening of gaps along specific directions in the Brillouin zone caused by the antiferromagnetic ordering.
Revtex, 4 pages, 3 postscript figures