Magnetic isotope effect in Bi2Sr2CaCu2O8+δ studied by high-resolution angle-resolved photoemission spectroscopy

K. Terashima; T. Sato; H. Matsui; T. Takahashi; H. Ding; T. Yamamoto; K. Kadowaki

doi:10.1016/j.physc.2007.03.329

Magnetic isotope effect in Bi₂Sr₂CaCu₂O_8+δ studied by high-resolution angle-resolved photoemission spectroscopy

K. Terashima, T. Sato, H. Matsui, T. Takahashi, H. Ding, T. Yamamoto, K. Kadowaki

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

Abstract

We studied the impurity effect on the electronic structure near the Fermi level in Bi₂Sr₂CaCu₂O_8+δ by high-resolution angle-resolved photoemission spectroscopy to clarify the origin of dispersion kink in high-T_c superconductors. We found that the dispersion kink at off-nodal region is significantly suppressed by Zn or Ni impurity while that at the node is less affected, suggesting that electrons are strongly coupled to the spin excitations at the off-nodal region.

Original language	English
Pages (from-to)	934-936
Number of pages	3
Journal	Physica C: Superconductivity and its applications
Volume	460-462 II
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2007.03.329
Publication status	Published - 2007 Sept 1

Keywords

ARPES
Impurity
Superconductor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/j.physc.2007.03.329

Cite this

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title = "Magnetic isotope effect in Bi2Sr2CaCu2O8+δ studied by high-resolution angle-resolved photoemission spectroscopy",

abstract = "We studied the impurity effect on the electronic structure near the Fermi level in Bi2Sr2CaCu2O8+δ by high-resolution angle-resolved photoemission spectroscopy to clarify the origin of dispersion kink in high-Tc superconductors. We found that the dispersion kink at off-nodal region is significantly suppressed by Zn or Ni impurity while that at the node is less affected, suggesting that electrons are strongly coupled to the spin excitations at the off-nodal region.",

keywords = "ARPES, Impurity, Superconductor",

author = "K. Terashima and T. Sato and H. Matsui and T. Takahashi and H. Ding and T. Yamamoto and K. Kadowaki",

note = "Funding Information: This work is supported by JST-CREST, and MEXT of Japan. K.T. and H.M. thank JSPS for financial support. ",

year = "2007",

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doi = "10.1016/j.physc.2007.03.329",

language = "English",

volume = "460-462 II",

pages = "934--936",

journal = "Physica C: Superconductivity and its Applications",

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publisher = "Elsevier",

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TY - JOUR

T1 - Magnetic isotope effect in Bi2Sr2CaCu2O8+δ studied by high-resolution angle-resolved photoemission spectroscopy

AU - Terashima, K.

AU - Sato, T.

AU - Matsui, H.

AU - Takahashi, T.

AU - Ding, H.

AU - Yamamoto, T.

AU - Kadowaki, K.

N1 - Funding Information: This work is supported by JST-CREST, and MEXT of Japan. K.T. and H.M. thank JSPS for financial support.

PY - 2007/9/1

Y1 - 2007/9/1

N2 - We studied the impurity effect on the electronic structure near the Fermi level in Bi2Sr2CaCu2O8+δ by high-resolution angle-resolved photoemission spectroscopy to clarify the origin of dispersion kink in high-Tc superconductors. We found that the dispersion kink at off-nodal region is significantly suppressed by Zn or Ni impurity while that at the node is less affected, suggesting that electrons are strongly coupled to the spin excitations at the off-nodal region.

AB - We studied the impurity effect on the electronic structure near the Fermi level in Bi2Sr2CaCu2O8+δ by high-resolution angle-resolved photoemission spectroscopy to clarify the origin of dispersion kink in high-Tc superconductors. We found that the dispersion kink at off-nodal region is significantly suppressed by Zn or Ni impurity while that at the node is less affected, suggesting that electrons are strongly coupled to the spin excitations at the off-nodal region.

KW - ARPES

KW - Impurity

KW - Superconductor

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