Photoemission study of pyrite-type transition-metal chalcogenides MS2 - xSex (M=Fe, Co, Ni)

K. Mamiya; T. Mizokawa; A. Fujimori; H. Takahashi; N. Môri; T. Miyadai; S. Suga; Nirmala Chandrasekharan; S. R. Krishnakumar; D. D. Sarma

doi:10.1016/S0921-4526(97)00243-3

Photoemission study of pyrite-type transition-metal chalcogenides MS_{2 - x}Se_x (M=Fe, Co, Ni)

K. Mamiya^*, T. Mizokawa, A. Fujimori, H. Takahashi, N. Môri, T. Miyadai, S. Suga, Nirmala Chandrasekharan, S. R. Krishnakumar, D. D. Sarma

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The electronic structures of pyrite-type transition-metal chalcogenides MS_{2 - x}Se_x (M = Fe, Co, Ni) has been investigated by photoemission and inverse-photoemission spectroscopy. The valence-band spectrum of ferromagnetic CoS₂ does not show exchange splitting of the Co 3d peak, in disagreement with band-structure calculations. High-resolution photoemission spectra of NiS_1.55Se_0.45 shows spectral weight transfer from low (≃50 meV) to high (0.2-0.5 eV) binding energies, in going from the metallic to the insulating phase.

Original language	English
Pages (from-to)	390-391
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	237-238
DOIs	https://doi.org/10.1016/S0921-4526(97)00243-3
Publication status	Published - 1997 Jul
Externally published	Yes

Keywords

Electronic structure
Metal-insulator transition
Photoemission spectroscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(97)00243-3

Cite this

@article{d701d880581f433caa25628e3cbe3e71,

title = "Photoemission study of pyrite-type transition-metal chalcogenides MS2 - xSex (M=Fe, Co, Ni)",

abstract = "The electronic structures of pyrite-type transition-metal chalcogenides MS2 - xSex (M = Fe, Co, Ni) has been investigated by photoemission and inverse-photoemission spectroscopy. The valence-band spectrum of ferromagnetic CoS2 does not show exchange splitting of the Co 3d peak, in disagreement with band-structure calculations. High-resolution photoemission spectra of NiS1.55Se0.45 shows spectral weight transfer from low (≃50 meV) to high (0.2-0.5 eV) binding energies, in going from the metallic to the insulating phase.",

keywords = "Electronic structure, Metal-insulator transition, Photoemission spectroscopy",

author = "K. Mamiya and T. Mizokawa and A. Fujimori and H. Takahashi and N. M{\^o}ri and T. Miyadai and S. Suga and Nirmala Chandrasekharan and Krishnakumar, {S. R.} and Sarma, {D. D.}",

year = "1997",

month = jul,

doi = "10.1016/S0921-4526(97)00243-3",

language = "English",

volume = "237-238",

pages = "390--391",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

}

TY - JOUR

T1 - Photoemission study of pyrite-type transition-metal chalcogenides MS2 - xSex (M=Fe, Co, Ni)

AU - Mamiya, K.

AU - Mizokawa, T.

AU - Fujimori, A.

AU - Takahashi, H.

AU - Môri, N.

AU - Miyadai, T.

AU - Suga, S.

AU - Chandrasekharan, Nirmala

AU - Krishnakumar, S. R.

AU - Sarma, D. D.

PY - 1997/7

Y1 - 1997/7

N2 - The electronic structures of pyrite-type transition-metal chalcogenides MS2 - xSex (M = Fe, Co, Ni) has been investigated by photoemission and inverse-photoemission spectroscopy. The valence-band spectrum of ferromagnetic CoS2 does not show exchange splitting of the Co 3d peak, in disagreement with band-structure calculations. High-resolution photoemission spectra of NiS1.55Se0.45 shows spectral weight transfer from low (≃50 meV) to high (0.2-0.5 eV) binding energies, in going from the metallic to the insulating phase.

AB - The electronic structures of pyrite-type transition-metal chalcogenides MS2 - xSex (M = Fe, Co, Ni) has been investigated by photoemission and inverse-photoemission spectroscopy. The valence-band spectrum of ferromagnetic CoS2 does not show exchange splitting of the Co 3d peak, in disagreement with band-structure calculations. High-resolution photoemission spectra of NiS1.55Se0.45 shows spectral weight transfer from low (≃50 meV) to high (0.2-0.5 eV) binding energies, in going from the metallic to the insulating phase.

KW - Electronic structure

KW - Metal-insulator transition

KW - Photoemission spectroscopy

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DO - 10.1016/S0921-4526(97)00243-3

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SN - 0921-4526

VL - 237-238

SP - 390

EP - 391

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -