X-Ray Photoemission Spectroscopic Study on the Electronic States in the Mixed System between Charge-Transfer and Mott-Hubbard Type Metals: Co0.91S and V0.91S

Teruki Motohashi, Keiso Hayashi, Masanori Matoba, Shuichiro Anzai, Atsushi Fujimori

研究成果: Article

4 引用 (Scopus)

抄録

In order to study the change of the electronic states from the charge-transfer(CT) type metal to the Mott-Hubbard(MH) one, X-ray photoemission spectra are measured on the NiAs-type (Co1-xVx)0.91S (x ≤ 0.50) and V0.91S. The asymmetry parameter α for S 2s and 2p core level spectra decrease with increasing x. This result indicates that the local density of states of S atoms at the Fermi level decreases as x increases; the system changes from the CT-type metal to the MH-one with x. The change in V 2p line shape with x suggests the possibility of the considerable hybridization between V 3d and S 3p in (Co1-xVx)0.91S at lower x region. This feature would be related to the appearance of the extra peak at binding energy EB = 2-3 eV in the valence band X-ray photoemission spectra.

元の言語English
ページ(範囲)1312-1316
ページ数5
ジャーナルJournal of the Physical Society of Japan
65
発行部数5
出版物ステータスPublished - 1996

Fingerprint

photoelectric emission
charge transfer
electronics
metals
x rays
line shape
binding energy
asymmetry
valence
atoms

ASJC Scopus subject areas

  • Physics and Astronomy(all)

これを引用

@article{64011fe6146c43388787063e97a3f471,
title = "X-Ray Photoemission Spectroscopic Study on the Electronic States in the Mixed System between Charge-Transfer and Mott-Hubbard Type Metals: Co0.91S and V0.91S",
abstract = "In order to study the change of the electronic states from the charge-transfer(CT) type metal to the Mott-Hubbard(MH) one, X-ray photoemission spectra are measured on the NiAs-type (Co1-xVx)0.91S (x ≤ 0.50) and V0.91S. The asymmetry parameter α for S 2s and 2p core level spectra decrease with increasing x. This result indicates that the local density of states of S atoms at the Fermi level decreases as x increases; the system changes from the CT-type metal to the MH-one with x. The change in V 2p line shape with x suggests the possibility of the considerable hybridization between V 3d and S 3p in (Co1-xVx)0.91S at lower x region. This feature would be related to the appearance of the extra peak at binding energy EB = 2-3 eV in the valence band X-ray photoemission spectra.",
keywords = "(CoV)S, Asymmetry parameter α, Charge-transfer type metal, Local density of states, Mott-hubbard type metal, XPS",
author = "Teruki Motohashi and Keiso Hayashi and Masanori Matoba and Shuichiro Anzai and Atsushi Fujimori",
year = "1996",
language = "English",
volume = "65",
pages = "1312--1316",
journal = "Journal of the Physical Society of Japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "5",

}

TY - JOUR

T1 - X-Ray Photoemission Spectroscopic Study on the Electronic States in the Mixed System between Charge-Transfer and Mott-Hubbard Type Metals

T2 - Co0.91S and V0.91S

AU - Motohashi, Teruki

AU - Hayashi, Keiso

AU - Matoba, Masanori

AU - Anzai, Shuichiro

AU - Fujimori, Atsushi

PY - 1996

Y1 - 1996

N2 - In order to study the change of the electronic states from the charge-transfer(CT) type metal to the Mott-Hubbard(MH) one, X-ray photoemission spectra are measured on the NiAs-type (Co1-xVx)0.91S (x ≤ 0.50) and V0.91S. The asymmetry parameter α for S 2s and 2p core level spectra decrease with increasing x. This result indicates that the local density of states of S atoms at the Fermi level decreases as x increases; the system changes from the CT-type metal to the MH-one with x. The change in V 2p line shape with x suggests the possibility of the considerable hybridization between V 3d and S 3p in (Co1-xVx)0.91S at lower x region. This feature would be related to the appearance of the extra peak at binding energy EB = 2-3 eV in the valence band X-ray photoemission spectra.

AB - In order to study the change of the electronic states from the charge-transfer(CT) type metal to the Mott-Hubbard(MH) one, X-ray photoemission spectra are measured on the NiAs-type (Co1-xVx)0.91S (x ≤ 0.50) and V0.91S. The asymmetry parameter α for S 2s and 2p core level spectra decrease with increasing x. This result indicates that the local density of states of S atoms at the Fermi level decreases as x increases; the system changes from the CT-type metal to the MH-one with x. The change in V 2p line shape with x suggests the possibility of the considerable hybridization between V 3d and S 3p in (Co1-xVx)0.91S at lower x region. This feature would be related to the appearance of the extra peak at binding energy EB = 2-3 eV in the valence band X-ray photoemission spectra.

KW - (CoV)S

KW - Asymmetry parameter α

KW - Charge-transfer type metal

KW - Local density of states

KW - Mott-hubbard type metal

KW - XPS

UR - http://www.scopus.com/inward/record.url?scp=0030557175&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030557175&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0030557175

VL - 65

SP - 1312

EP - 1316

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 5

ER -