High-resolution angle-resolved photoemission study of non cuprate two-dimensional superconductor Sr2RuO4

T. Yokoya; O. Akaki; H. Kumigashira; A. Chainani; T. Takahashi; H. Katayama-Yoshida; M. Kasai; Y. Tokura

High-resolution angle-resolved photoemission study of non cuprate two-dimensional superconductor Sr2RuO4

T. Yokoya, O. Akaki, H. Kumigashira, A. Chainani, T. Takahashi, H. Katayama-Yoshida, M. Kasai, Y. Tokura

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

Abstract

High-resolution angle-resolved photoemission spectroscopy has been carried out on a ruthenate superconductor Sr2RuO4 (Tc ∼ 1 K), which has the same crystal structure as La2CuO4, but with RuO2 layers replacing the CuO2, and exhibits T² dependence of electrical resistivity below 25 K. The results show that the electronic structure of Sr2RuO4 has an extended van-Hove singularity (VHS) near EF in a quite similar manner to the high Tc cuprates, regardless of the character of the electronic states near EF. This requests reexamination of the VHS scenario and its relation to both the normal and superconducting properties.

Original language	English
Pages (from-to)	171-174
Number of pages	4
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	78
Publication status	Published - May 1996
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

Cite this

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title = "High-resolution angle-resolved photoemission study of non cuprate two-dimensional superconductor Sr2RuO4",

abstract = "High-resolution angle-resolved photoemission spectroscopy has been carried out on a ruthenate superconductor Sr2RuO4 (Tc ∼ 1 K), which has the same crystal structure as La2CuO4, but with RuO2 layers replacing the CuO2, and exhibits T2 dependence of electrical resistivity below 25 K. The results show that the electronic structure of Sr2RuO4 has an extended van-Hove singularity (VHS) near EF in a quite similar manner to the high Tc cuprates, regardless of the character of the electronic states near EF. This requests reexamination of the VHS scenario and its relation to both the normal and superconducting properties.",

author = "T. Yokoya and O. Akaki and H. Kumigashira and A. Chainani and T. Takahashi and H. Katayama-Yoshida and M. Kasai and Y. Tokura",

year = "1996",

month = may,

language = "English",

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pages = "171--174",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

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T1 - High-resolution angle-resolved photoemission study of non cuprate two-dimensional superconductor Sr2RuO4

AU - Yokoya, T.

AU - Akaki, O.

AU - Kumigashira, H.

AU - Chainani, A.

AU - Takahashi, T.

AU - Katayama-Yoshida, H.

AU - Kasai, M.

AU - Tokura, Y.

PY - 1996/5

Y1 - 1996/5

N2 - High-resolution angle-resolved photoemission spectroscopy has been carried out on a ruthenate superconductor Sr2RuO4 (Tc ∼ 1 K), which has the same crystal structure as La2CuO4, but with RuO2 layers replacing the CuO2, and exhibits T2 dependence of electrical resistivity below 25 K. The results show that the electronic structure of Sr2RuO4 has an extended van-Hove singularity (VHS) near EF in a quite similar manner to the high Tc cuprates, regardless of the character of the electronic states near EF. This requests reexamination of the VHS scenario and its relation to both the normal and superconducting properties.

AB - High-resolution angle-resolved photoemission spectroscopy has been carried out on a ruthenate superconductor Sr2RuO4 (Tc ∼ 1 K), which has the same crystal structure as La2CuO4, but with RuO2 layers replacing the CuO2, and exhibits T2 dependence of electrical resistivity below 25 K. The results show that the electronic structure of Sr2RuO4 has an extended van-Hove singularity (VHS) near EF in a quite similar manner to the high Tc cuprates, regardless of the character of the electronic states near EF. This requests reexamination of the VHS scenario and its relation to both the normal and superconducting properties.

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SN - 0368-2048

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JF - Journal of Electron Spectroscopy and Related Phenomena

ER -

High-resolution angle-resolved photoemission study of non cuprate two-dimensional superconductor Sr2RuO4

Abstract

ASJC Scopus subject areas

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