EVOLUTION OF THE SPECTRAL-FUNCTION IN MOTT-HUBBARD SYSTEMS WITH D(1) CONFIGURATION

A FUJIMORI; S. HASE; H NAMATAME; Y FUJISHIMA; Y TOKURA; H EISAKI; S UCHIDA; K TAKEGAHARA; FMF DEGROOT; Frank de Groot

EVOLUTION OF THE SPECTRAL-FUNCTION IN MOTT-HUBBARD SYSTEMS WITH D(1) CONFIGURATION

A FUJIMORI^*
, S. HASE
, H NAMATAME
, Y FUJISHIMA
, Y TOKURA
, H EISAKI
, S UCHIDA
, K TAKEGAHARA
, FMF DEGROOT
, Frank de Groot

^*Corresponding author for this work

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

Abstract

We have studied the photoemission spectra of perovskite-type Ti3+ and V4+ oxides, which have formally the d1 configuration ranging from a Mott insulator to a paramagnetic metal. The results indicate that as the Mott-Hubbard gap closes, spectral weight is transferred from the upper and lower Hubbard bands to the region near the Fermi level with decreasing U/W (U, d-d Coulomb repulsion energy; W, one-electron d-band width), i.e., from the incoherent to the coherent part of the single-particle spectral function.

Original language	English
Pages (from-to)	1796-1799
Number of pages	4
Journal	Physical Review Letters
Volume	69
Issue number	12
Publication status	Published - 21 Sept 1992
Externally published	Yes

Keywords

ELECTRONIC-STRUCTURE
MODEL
INSULATOR
VO2

Cite this

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title = "EVOLUTION OF THE SPECTRAL-FUNCTION IN MOTT-HUBBARD SYSTEMS WITH D(1) CONFIGURATION",

abstract = "We have studied the photoemission spectra of perovskite-type Ti3+ and V4+ oxides, which have formally the d1 configuration ranging from a Mott insulator to a paramagnetic metal. The results indicate that as the Mott-Hubbard gap closes, spectral weight is transferred from the upper and lower Hubbard bands to the region near the Fermi level with decreasing U/W (U, d-d Coulomb repulsion energy; W, one-electron d-band width), i.e., from the incoherent to the coherent part of the single-particle spectral function.",

keywords = "ELECTRONIC-STRUCTURE, MODEL, INSULATOR, VO2",

author = "A FUJIMORI and S. HASE and H NAMATAME and Y FUJISHIMA and Y TOKURA and H EISAKI and S UCHIDA and K TAKEGAHARA and FMF DEGROOT and \{de Groot\}, Frank",

year = "1992",

month = sep,

day = "21",

language = "English",

volume = "69",

pages = "1796--1799",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "12",

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TY - JOUR

T1 - EVOLUTION OF THE SPECTRAL-FUNCTION IN MOTT-HUBBARD SYSTEMS WITH D(1) CONFIGURATION

AU - FUJIMORI, A

AU - HASE, S.

AU - NAMATAME, H

AU - FUJISHIMA, Y

AU - TOKURA, Y

AU - EISAKI, H

AU - UCHIDA, S

AU - TAKEGAHARA, K

AU - DEGROOT, FMF

AU - de Groot, Frank

PY - 1992/9/21

Y1 - 1992/9/21

N2 - We have studied the photoemission spectra of perovskite-type Ti3+ and V4+ oxides, which have formally the d1 configuration ranging from a Mott insulator to a paramagnetic metal. The results indicate that as the Mott-Hubbard gap closes, spectral weight is transferred from the upper and lower Hubbard bands to the region near the Fermi level with decreasing U/W (U, d-d Coulomb repulsion energy; W, one-electron d-band width), i.e., from the incoherent to the coherent part of the single-particle spectral function.

AB - We have studied the photoemission spectra of perovskite-type Ti3+ and V4+ oxides, which have formally the d1 configuration ranging from a Mott insulator to a paramagnetic metal. The results indicate that as the Mott-Hubbard gap closes, spectral weight is transferred from the upper and lower Hubbard bands to the region near the Fermi level with decreasing U/W (U, d-d Coulomb repulsion energy; W, one-electron d-band width), i.e., from the incoherent to the coherent part of the single-particle spectral function.

KW - ELECTRONIC-STRUCTURE

KW - MODEL

KW - INSULATOR

KW - VO2

M3 - Article

SN - 0031-9007

VL - 69

SP - 1796

EP - 1799

JO - Physical Review Letters

JF - Physical Review Letters

IS - 12

ER -

EVOLUTION OF THE SPECTRAL-FUNCTION IN MOTT-HUBBARD SYSTEMS WITH D(1) CONFIGURATION

Abstract

Keywords

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