Coherent and incoherent d band dispersions in SrVO3

M. Takizawa; M. Minohara; H. Kumigashira; D. Toyota; M. Oshima; H. Wadati; T. Yoshida; A. Fujimori; M. Lippmaa; M. Kawasaki; H. Koinuma; G. Sordi; M. Rozenberg

doi:10.1103/PhysRevB.80.235104

Coherent and incoherent d band dispersions in SrVO3

M. Takizawa, M. Minohara, H. Kumigashira, D. Toyota, M. Oshima, H. Wadati, T. Yoshida, A. Fujimori, M. Lippmaa, M. Kawasaki, H. Koinuma, G. Sordi, M. Rozenberg

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

Abstract

We have performed an angle-resolved photoemission spectroscopy study of SrVO3 thin films. Utilizing thin films prepared in situ, with well-defined and atomically flat surfaces, contributions from surface states centered at ∼−1.5 eV were dramatically reduced, enabling us to study the bulklike V 3d states, including the incoherent part. A clear band dispersion is observed not only in the coherent part but also in the incoherent part and the spectral weight of the incoherent part is larger within the Fermi volume. These findings are particularly significant since the description of the so-called incoherent Hubbard band in SrVO3 needs to include the nonlocal interaction between the atoms. These trends are well reproduced by dynamical mean-field theory calculations.

Original language	English
Article number	ARTN 235104
Number of pages	4
Journal	Physical Review B
Volume	80
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevB.80.235104
Publication status	Published - Dec 2009

Keywords

SYSTEMS
Hubbard model
SPECTRAL-FUNCTION
electronic structure
pulsed laser deposition
thin films
photoelectron spectra
CA1-XSRXVO3
strontium compounds
metal-insulator transition
surface states
TRANSITION-METAL OXIDES

Access to Document

10.1103/PhysRevB.80.235104

http://link.aps.org/doi/10.1103/PhysRevB.80.235104

Cite this

@article{7cbd62a000d94d618375ae5cc4cf107b,

title = "Coherent and incoherent d band dispersions in SrVO3",

abstract = "We have performed an angle-resolved photoemission spectroscopy study of SrVO3 thin films. Utilizing thin films prepared in situ, with well-defined and atomically flat surfaces, contributions from surface states centered at ∼−1.5 eV were dramatically reduced, enabling us to study the bulklike V 3d states, including the incoherent part. A clear band dispersion is observed not only in the coherent part but also in the incoherent part and the spectral weight of the incoherent part is larger within the Fermi volume. These findings are particularly significant since the description of the so-called incoherent Hubbard band in SrVO3 needs to include the nonlocal interaction between the atoms. These trends are well reproduced by dynamical mean-field theory calculations.",

keywords = "SYSTEMS, Hubbard model, SPECTRAL-FUNCTION, electronic structure, pulsed laser deposition, thin films, photoelectron spectra, CA1-XSRXVO3, strontium compounds, metal-insulator transition, surface states, TRANSITION-METAL OXIDES",

author = "M. Takizawa and M. Minohara and H. Kumigashira and D. Toyota and M. Oshima and H. Wadati and T. Yoshida and A. Fujimori and M. Lippmaa and M. Kawasaki and H. Koinuma and G. Sordi and M. Rozenberg",

year = "2009",

month = dec,

doi = "10.1103/PhysRevB.80.235104",

language = "English",

volume = "80",

journal = "Physical Review B",

issn = "1098-0121",

publisher = "American Physical Society",

number = "23",

}

TY - JOUR

T1 - Coherent and incoherent d band dispersions in SrVO3

AU - Takizawa, M.

AU - Minohara, M.

AU - Kumigashira, H.

AU - Toyota, D.

AU - Oshima, M.

AU - Wadati, H.

AU - Yoshida, T.

AU - Fujimori, A.

AU - Lippmaa, M.

AU - Kawasaki, M.

AU - Koinuma, H.

AU - Sordi, G.

AU - Rozenberg, M.

PY - 2009/12

Y1 - 2009/12

N2 - We have performed an angle-resolved photoemission spectroscopy study of SrVO3 thin films. Utilizing thin films prepared in situ, with well-defined and atomically flat surfaces, contributions from surface states centered at ∼−1.5 eV were dramatically reduced, enabling us to study the bulklike V 3d states, including the incoherent part. A clear band dispersion is observed not only in the coherent part but also in the incoherent part and the spectral weight of the incoherent part is larger within the Fermi volume. These findings are particularly significant since the description of the so-called incoherent Hubbard band in SrVO3 needs to include the nonlocal interaction between the atoms. These trends are well reproduced by dynamical mean-field theory calculations.

AB - We have performed an angle-resolved photoemission spectroscopy study of SrVO3 thin films. Utilizing thin films prepared in situ, with well-defined and atomically flat surfaces, contributions from surface states centered at ∼−1.5 eV were dramatically reduced, enabling us to study the bulklike V 3d states, including the incoherent part. A clear band dispersion is observed not only in the coherent part but also in the incoherent part and the spectral weight of the incoherent part is larger within the Fermi volume. These findings are particularly significant since the description of the so-called incoherent Hubbard band in SrVO3 needs to include the nonlocal interaction between the atoms. These trends are well reproduced by dynamical mean-field theory calculations.

KW - SYSTEMS

KW - Hubbard model

KW - SPECTRAL-FUNCTION

KW - electronic structure

KW - pulsed laser deposition

KW - thin films

KW - photoelectron spectra

KW - CA1-XSRXVO3

KW - strontium compounds

KW - metal-insulator transition

KW - surface states

KW - TRANSITION-METAL OXIDES

U2 - 10.1103/PhysRevB.80.235104

DO - 10.1103/PhysRevB.80.235104

M3 - Article

SN - 1098-0121

VL - 80

JO - Physical Review B

JF - Physical Review B

IS - 23

M1 - ARTN 235104

ER -