Electronic structure of impurity-substituted Bi2Sr 2CaCu2O8+δ studied by angle-resolved photoemission spectroscopy

K. Terashima; D. Hashimoto; H. Matsui; T. Sato; T. Takahashi; T. Yamamoto; K. Kadowaki

doi:10.1016/j.jpcs.2005.10.054

Electronic structure of impurity-substituted Bi₂Sr ₂CaCu₂O_8+δ studied by angle-resolved photoemission spectroscopy

K. Terashima, D. Hashimoto, H. Matsui, T. Sato, T. Takahashi, T. Yamamoto, K. Kadowaki

Graduate School of Natural Science and Technology

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) on Co-, Ni-, and Zn-substituted Bi₂Sr₂CaCu ₂O_8+δ (Bi2212) to study the impurity effect on the electronic structure. The shape of Fermi surface and the symmetry of superconducting gap are unchanged by impurities, while the superconducting coherent peak around (π, 0) is remarkably suppressed. The temperature dependence of the coherent-peak intensity shows a good correspondence to the reported superfluid density. The intensity of coherent peak scales well with the T_c in pristine, Co-, and Ni-Bi2212, but not in Zn-Bi2212, suggesting that non-magnetic Zn atoms destroy the superconductivity more strongly than the magnetic impurities.

Original language	English
Pages (from-to)	271-273
Number of pages	3
Journal	Journal of Physics and Chemistry of Solids
Volume	67
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jpcs.2005.10.054
Publication status	Published - Jan 1 2006

Keywords

D. Superconductivity

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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Terashima, K., Hashimoto, D., Matsui, H., Sato, T., Takahashi, T., Yamamoto, T., & Kadowaki, K. (2006). Electronic structure of impurity-substituted Bi₂Sr ₂CaCu₂O_8+δ studied by angle-resolved photoemission spectroscopy. Journal of Physics and Chemistry of Solids, 67(1-3), 271-273. https://doi.org/10.1016/j.jpcs.2005.10.054

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abstract = "We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) on Co-, Ni-, and Zn-substituted Bi2Sr2CaCu 2O8+δ (Bi2212) to study the impurity effect on the electronic structure. The shape of Fermi surface and the symmetry of superconducting gap are unchanged by impurities, while the superconducting coherent peak around (π, 0) is remarkably suppressed. The temperature dependence of the coherent-peak intensity shows a good correspondence to the reported superfluid density. The intensity of coherent peak scales well with the Tc in pristine, Co-, and Ni-Bi2212, but not in Zn-Bi2212, suggesting that non-magnetic Zn atoms destroy the superconductivity more strongly than the magnetic impurities.",

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

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AU - Terashima, K.

AU - Hashimoto, D.

AU - Matsui, H.

AU - Sato, T.

AU - Takahashi, T.

AU - Yamamoto, T.

AU - Kadowaki, K.

PY - 2006/1/1

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AB - We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) on Co-, Ni-, and Zn-substituted Bi2Sr2CaCu 2O8+δ (Bi2212) to study the impurity effect on the electronic structure. The shape of Fermi surface and the symmetry of superconducting gap are unchanged by impurities, while the superconducting coherent peak around (π, 0) is remarkably suppressed. The temperature dependence of the coherent-peak intensity shows a good correspondence to the reported superfluid density. The intensity of coherent peak scales well with the Tc in pristine, Co-, and Ni-Bi2212, but not in Zn-Bi2212, suggesting that non-magnetic Zn atoms destroy the superconductivity more strongly than the magnetic impurities.

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