Photoemission study of electron correlation in M7X8 (M=Fe, Co; X=S, Se)

K. Shimada; T. Mizokawa; A. Fujimori; M. Shirai; T. Kamimura

doi:10.1016/s0368-2048(98)00366-1

Photoemission study of electron correlation in M₇X₈ (M=Fe, Co; X=S, Se)

K. Shimada^*, T. Mizokawa, A. Fujimori, M. Shirai, T. Kamimura

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

The occupied and unoccupied states of ferrimagnetic metals Fe₇S₈ and Fe₇Se₈, and a paramagnetic metal Co₇Se₈ have been studied by photoemission and X-ray inverse photoemission spectroscopies. Compared with the density of states (DOS) given by the band-structure calculation, the photoemission spectra of Fe 3d and Co 3d are narrowed. While the Fe 3d photoemission spectrum has a strong intensity at the higher binding energy side, it is significantly suppressed near the Fermi level. Self-energy corrections to the DOS's have been done for Fe₇Se₈ and Co₇Se₈. Disagreements between experimental and theoretical spectra have become small, indicating the importance of electron correlation effect.

Original language	English
Pages (from-to)	777-781
Number of pages	5
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	101-103
DOIs	https://doi.org/10.1016/s0368-2048(98)00366-1
Publication status	Published - 1999
Externally published	Yes

Keywords

Electron correlation
Itinerant magnetism
Photoemission
Transition-metal chalcogenides

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

Access to Document

10.1016/s0368-2048(98)00366-1

Cite this

@article{f0ceb20659b749cabcbbd56d74355bc9,

title = "Photoemission study of electron correlation in M7X8 (M=Fe, Co; X=S, Se)",

abstract = "The occupied and unoccupied states of ferrimagnetic metals Fe7S8 and Fe7Se8, and a paramagnetic metal Co7Se8 have been studied by photoemission and X-ray inverse photoemission spectroscopies. Compared with the density of states (DOS) given by the band-structure calculation, the photoemission spectra of Fe 3d and Co 3d are narrowed. While the Fe 3d photoemission spectrum has a strong intensity at the higher binding energy side, it is significantly suppressed near the Fermi level. Self-energy corrections to the DOS's have been done for Fe7Se8 and Co7Se8. Disagreements between experimental and theoretical spectra have become small, indicating the importance of electron correlation effect.",

keywords = "Electron correlation, Itinerant magnetism, Photoemission, Transition-metal chalcogenides",

author = "K. Shimada and T. Mizokawa and A. Fujimori and M. Shirai and T. Kamimura",

note = "Funding Information: This work is partly supported by the Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan.",

year = "1999",

doi = "10.1016/s0368-2048(98)00366-1",

language = "English",

volume = "101-103",

pages = "777--781",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

issn = "0368-2048",

publisher = "Elsevier",

}

TY - JOUR

T1 - Photoemission study of electron correlation in M7X8 (M=Fe, Co; X=S, Se)

AU - Shimada, K.

AU - Mizokawa, T.

AU - Fujimori, A.

AU - Shirai, M.

AU - Kamimura, T.

N1 - Funding Information: This work is partly supported by the Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan.

PY - 1999

Y1 - 1999

N2 - The occupied and unoccupied states of ferrimagnetic metals Fe7S8 and Fe7Se8, and a paramagnetic metal Co7Se8 have been studied by photoemission and X-ray inverse photoemission spectroscopies. Compared with the density of states (DOS) given by the band-structure calculation, the photoemission spectra of Fe 3d and Co 3d are narrowed. While the Fe 3d photoemission spectrum has a strong intensity at the higher binding energy side, it is significantly suppressed near the Fermi level. Self-energy corrections to the DOS's have been done for Fe7Se8 and Co7Se8. Disagreements between experimental and theoretical spectra have become small, indicating the importance of electron correlation effect.

AB - The occupied and unoccupied states of ferrimagnetic metals Fe7S8 and Fe7Se8, and a paramagnetic metal Co7Se8 have been studied by photoemission and X-ray inverse photoemission spectroscopies. Compared with the density of states (DOS) given by the band-structure calculation, the photoemission spectra of Fe 3d and Co 3d are narrowed. While the Fe 3d photoemission spectrum has a strong intensity at the higher binding energy side, it is significantly suppressed near the Fermi level. Self-energy corrections to the DOS's have been done for Fe7Se8 and Co7Se8. Disagreements between experimental and theoretical spectra have become small, indicating the importance of electron correlation effect.

KW - Electron correlation

KW - Itinerant magnetism

KW - Photoemission

KW - Transition-metal chalcogenides

UR - http://www.scopus.com/inward/record.url?scp=4243244768&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4243244768&partnerID=8YFLogxK

U2 - 10.1016/s0368-2048(98)00366-1

DO - 10.1016/s0368-2048(98)00366-1

M3 - Article

AN - SCOPUS:4243244768

SN - 0368-2048

VL - 101-103

SP - 777

EP - 781

JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

ER -