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Electronic structure of NiS$_{1-x}$Se$_x$ across the phase transition

D. D. Sarma·S. R. Krishnakumar·Nirmala Chandrasekharan·E. Weschke·C. Schüßler-Langeheine·L. Kilian·G. Kaindl
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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.

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D. D. Sarma, S. R. Krishnakumar, Nirmala Chandrasekharan, E. Weschke, C. Schüßler-Langeheine, L. Kilian, G. Kaindl. 1998-03-10. Electronic structure of NiS$_{1-x}$Se$_x$ across the phase transition. https://doi.org/10.1103/physrevlett.80.1284

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