Unconventional spectral changes across the metal-insulator transition

O. Akaki; A. Chainani; T. Yokoya; H. Fujisawa; T. Takahashi; M. Onoda

doi:10.1103/PhysRevB.56.12050

Unconventional spectral changes across the metal-insulator transition

O. Akaki, A. Chainani, T. Yokoya, H. Fujisawa, T. Takahashi, M. Onoda

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

7 Citations (Scopus)

Abstract

We study the change in the electronic structure of (Formula presented) across the δ-controlled metal-insulator (M-I) transition. X-ray-absorption spectroscopy shows the formation of hole states with substantial (Formula presented) character as a function of δ. Ultraviolet photoemission spectroscopy confirms the gap (Formula presented) closure across the M-I transition due to the doped hole states. The results show that a Mott-Hubbard system can have a charge-transfer character due to the strong hybridization, indicating a very mixed character ground state.

Original language	English
Pages (from-to)	12050-12053
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	56
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevB.56.12050
Publication status	Published - Jan 1 1997
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.56.12050

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abstract = "We study the change in the electronic structure of (Formula presented) across the δ-controlled metal-insulator (M-I) transition. X-ray-absorption spectroscopy shows the formation of hole states with substantial (Formula presented) character as a function of δ. Ultraviolet photoemission spectroscopy confirms the gap (Formula presented) closure across the M-I transition due to the doped hole states. The results show that a Mott-Hubbard system can have a charge-transfer character due to the strong hybridization, indicating a very mixed character ground state.",

author = "O. Akaki and A. Chainani and T. Yokoya and H. Fujisawa and T. Takahashi and M. Onoda",

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AU - Akaki, O.

AU - Chainani, A.

AU - Yokoya, T.

AU - Fujisawa, H.

AU - Takahashi, T.

AU - Onoda, M.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - We study the change in the electronic structure of (Formula presented) across the δ-controlled metal-insulator (M-I) transition. X-ray-absorption spectroscopy shows the formation of hole states with substantial (Formula presented) character as a function of δ. Ultraviolet photoemission spectroscopy confirms the gap (Formula presented) closure across the M-I transition due to the doped hole states. The results show that a Mott-Hubbard system can have a charge-transfer character due to the strong hybridization, indicating a very mixed character ground state.

AB - We study the change in the electronic structure of (Formula presented) across the δ-controlled metal-insulator (M-I) transition. X-ray-absorption spectroscopy shows the formation of hole states with substantial (Formula presented) character as a function of δ. Ultraviolet photoemission spectroscopy confirms the gap (Formula presented) closure across the M-I transition due to the doped hole states. The results show that a Mott-Hubbard system can have a charge-transfer character due to the strong hybridization, indicating a very mixed character ground state.

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Unconventional spectral changes across the metal-insulator transition

Abstract

ASJC Scopus subject areas

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