PHOTOEMISSION-STUDY OF PYRITE-TYPE TRANSITION-METAL CHALCOGENIDES MS2-XSEX (M=FE, CO, NI)

Authors
MAMIYA K MIZOKAWA T FUJIMORI A TAKAHASHI H MORI N MIYADAI T SUGA S CHANDRASEKHARAN N KRISHNAKUMAR SR SARMA DD
Citation
K. Mamiya et al., PHOTOEMISSION-STUDY OF PYRITE-TYPE TRANSITION-METAL CHALCOGENIDES MS2-XSEX (M=FE, CO, NI), Physica. B, Condensed matter, 237, 1997, pp. 390-391
Citations number
6
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
237
Year of publication
1997
Pages
390 - 391
Database
ISI
SICI code
0921-4526(1997)237:<390:POPTCM>2.0.ZU;2-4
Abstract
The electronic structures of pyrite-type transition-metal chalcogenide s MS2-xSex (M = Fe, Co, Ni) has been investigated by photoemission and inverse-photoemission spectroscopy. The valence-band spectrum of ferr omagnetic CoS2 does not show exchange splitting of the Co 3d peak, in disagreement with band-structure calculations. High-resolution photoem ission spectra of NiS1.55Se0.45 shows spectral weight transfer from lo w (similar or equal to 50 meV) to high (0.2-0.5 eV) binding energies, in going from the metallic to the insulating phase.