Self-energy analysis of multiple-bosonic mode coupling in Sr 2RuO4

C. Kim; Chul Kim; W. S. Kyung; S. R. Park; C. S. Leem; D. J. Song; Y. K. Kim; S. K. Choi; W. S. Jung; Y. Y. Koh; H. Y. Choi; Yoshiyuki Yoshida; R. G. Moore; Z. X. Shen

doi:10.1016/j.jpcs.2010.10.068

Self-energy analysis of multiple-bosonic mode coupling in Sr ₂RuO₄

C. Kim, Chul Kim, W. S. Kyung, S. R. Park, C. S. Leem, D. J. Song, Y. K. Kim, S. K. Choi, W. S. Jung, Y. Y. Koh, H. Y. Choi, Yoshiyuki Yoshida, R. G. Moore, Z. X. Shen

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

8 Scopus citations

Abstract

We report angle-resolved photoemission spectroscopy studies on Sr ₂RuO₄. We observe multiple-bosonic mode coupling in the α and β band dispersions. To extract the self-energy from the data for which the usual fitting methods do not work well, we propose a scheme that exploits the relation between the spectral intensity and self-energy, termed as relative self-energy. The relative self-energy obtained in that way contains important features of the self-energy. We observe not only the features that can be obtained from the band dispersions but also additional features that were not seen.

Original language	English
Pages (from-to)	556-558
Number of pages	3
Journal	Journal of Physics and Chemistry of Solids
Volume	72
Issue number	5
DOIs	https://doi.org/10.1016/j.jpcs.2010.10.068
State	Published - May 2011
Externally published	Yes

Funding

We acknowledge helpful discussion with E. Rotenberg. This work was supported by the KICOS under Grant no. K20602000008 and A3 Foresight program through the NRF of Korea funded by MEST. C.K. acknowledges support through the BK21 Project. SSRL is operated by the DOE Office of BES.

Funders	Funder number
KICOS	K20602000008
NRF of Korea
Ministry of Education, Science and Technology

Keywords

A. Oxides
C. Photoelectron spectroscopy
D. Electronic structure

Access to Document

10.1016/j.jpcs.2010.10.068

Cite this

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title = "Self-energy analysis of multiple-bosonic mode coupling in Sr 2RuO4",

abstract = "We report angle-resolved photoemission spectroscopy studies on Sr 2RuO4. We observe multiple-bosonic mode coupling in the α and β band dispersions. To extract the self-energy from the data for which the usual fitting methods do not work well, we propose a scheme that exploits the relation between the spectral intensity and self-energy, termed as relative self-energy. The relative self-energy obtained in that way contains important features of the self-energy. We observe not only the features that can be obtained from the band dispersions but also additional features that were not seen.",

keywords = "A. Oxides, C. Photoelectron spectroscopy, D. Electronic structure",

author = "C. Kim and Chul Kim and Kyung, {W. S.} and Park, {S. R.} and Leem, {C. S.} and Song, {D. J.} and Kim, {Y. K.} and Choi, {S. K.} and Jung, {W. S.} and Koh, {Y. Y.} and Choi, {H. Y.} and Yoshiyuki Yoshida and Moore, {R. G.} and Shen, {Z. X.}",

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language = "English",

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AU - Kim, C.

AU - Kim, Chul

AU - Kyung, W. S.

AU - Park, S. R.

AU - Leem, C. S.

AU - Song, D. J.

AU - Kim, Y. K.

AU - Choi, S. K.

AU - Jung, W. S.

AU - Koh, Y. Y.

AU - Choi, H. Y.

AU - Yoshida, Yoshiyuki

AU - Moore, R. G.

AU - Shen, Z. X.

PY - 2011/5

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AB - We report angle-resolved photoemission spectroscopy studies on Sr 2RuO4. We observe multiple-bosonic mode coupling in the α and β band dispersions. To extract the self-energy from the data for which the usual fitting methods do not work well, we propose a scheme that exploits the relation between the spectral intensity and self-energy, termed as relative self-energy. The relative self-energy obtained in that way contains important features of the self-energy. We observe not only the features that can be obtained from the band dispersions but also additional features that were not seen.

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