Photoemission study of the metal-nonmetal transition in NiS

A. Fujimori, H. Namatame, Masanori Matoba, S. Anzai

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

We have observed small changes in the ultraviolet photoemission spectra of NiS across the temperature-induced phase transition between the Pauli-paramagnetic metal and the antiferromagnetic nonmetal. In going from the nonmetallic to the metallic phases, the main band (d8L) within 3 eV below the Fermi level EF is shifted toward EF by 0.05 eV. This observation is consistent with the closing of a S 3p Ni 3d charge-transfer gap and cannot be reconciled with that of a band gap of antiferromagnetic origin. The spectrum loses a small fraction of intensity in the vicinity of EF as the gap is collapsed. The virtually identical line shape of the main band between the two phases is consistent with the persistence of short-range antiferromagnetic correlation in the paramagnetic phase.

Original languageEnglish
Pages (from-to)620-623
Number of pages4
JournalPhysical Review B
Volume42
Issue number1
DOIs
Publication statusPublished - 1990

Fingerprint

Nonmetals
Photoemission
Fermi level
Charge transfer
Energy gap
photoelectric emission
Phase transitions
Metals
transition metals
closing
Temperature
line shape
charge transfer
metals
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Photoemission study of the metal-nonmetal transition in NiS. / Fujimori, A.; Namatame, H.; Matoba, Masanori; Anzai, S.

In: Physical Review B, Vol. 42, No. 1, 1990, p. 620-623.

Research output: Contribution to journalArticle

Fujimori, A. ; Namatame, H. ; Matoba, Masanori ; Anzai, S. / Photoemission study of the metal-nonmetal transition in NiS. In: Physical Review B. 1990 ; Vol. 42, No. 1. pp. 620-623.
@article{79f736de739c4dec8794690cf39a45fc,
title = "Photoemission study of the metal-nonmetal transition in NiS",
abstract = "We have observed small changes in the ultraviolet photoemission spectra of NiS across the temperature-induced phase transition between the Pauli-paramagnetic metal and the antiferromagnetic nonmetal. In going from the nonmetallic to the metallic phases, the main band (d8L) within 3 eV below the Fermi level EF is shifted toward EF by 0.05 eV. This observation is consistent with the closing of a S 3p Ni 3d charge-transfer gap and cannot be reconciled with that of a band gap of antiferromagnetic origin. The spectrum loses a small fraction of intensity in the vicinity of EF as the gap is collapsed. The virtually identical line shape of the main band between the two phases is consistent with the persistence of short-range antiferromagnetic correlation in the paramagnetic phase.",
author = "A. Fujimori and H. Namatame and Masanori Matoba and S. Anzai",
year = "1990",
doi = "10.1103/PhysRevB.42.620",
language = "English",
volume = "42",
pages = "620--623",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "1",

}

TY - JOUR

T1 - Photoemission study of the metal-nonmetal transition in NiS

AU - Fujimori, A.

AU - Namatame, H.

AU - Matoba, Masanori

AU - Anzai, S.

PY - 1990

Y1 - 1990

N2 - We have observed small changes in the ultraviolet photoemission spectra of NiS across the temperature-induced phase transition between the Pauli-paramagnetic metal and the antiferromagnetic nonmetal. In going from the nonmetallic to the metallic phases, the main band (d8L) within 3 eV below the Fermi level EF is shifted toward EF by 0.05 eV. This observation is consistent with the closing of a S 3p Ni 3d charge-transfer gap and cannot be reconciled with that of a band gap of antiferromagnetic origin. The spectrum loses a small fraction of intensity in the vicinity of EF as the gap is collapsed. The virtually identical line shape of the main band between the two phases is consistent with the persistence of short-range antiferromagnetic correlation in the paramagnetic phase.

AB - We have observed small changes in the ultraviolet photoemission spectra of NiS across the temperature-induced phase transition between the Pauli-paramagnetic metal and the antiferromagnetic nonmetal. In going from the nonmetallic to the metallic phases, the main band (d8L) within 3 eV below the Fermi level EF is shifted toward EF by 0.05 eV. This observation is consistent with the closing of a S 3p Ni 3d charge-transfer gap and cannot be reconciled with that of a band gap of antiferromagnetic origin. The spectrum loses a small fraction of intensity in the vicinity of EF as the gap is collapsed. The virtually identical line shape of the main band between the two phases is consistent with the persistence of short-range antiferromagnetic correlation in the paramagnetic phase.

UR - http://www.scopus.com/inward/record.url?scp=0000528663&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000528663&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.42.620

DO - 10.1103/PhysRevB.42.620

M3 - Article

VL - 42

SP - 620

EP - 623

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 1

ER -