Direct observation of a quasiparticle band in CeIr In5: An angle-resolved photoemission spectroscopy study

Shin Ichi Fujimori; Atsushi Fujimori; Kenya Shimada; Takamasa Narimura; Kenichi Kobayashi; Hirofumi Namatame; Masaki Taniguchi; Hisatomo Harima; Hiroaki Shishido; Shugo Ikeda; Dai Aoki; Yoshifumi Tokiwa; Yoshinori Haga; Yoshichika Onuki

doi:10.1103/PhysRevB.73.224517

Direct observation of a quasiparticle band in CeIr In5: An angle-resolved photoemission spectroscopy study

Shin Ichi Fujimori, Atsushi Fujimori, Kenya Shimada, Takamasa Narimura, Kenichi Kobayashi, Hirofumi Namatame, Masaki Taniguchi, Hisatomo Harima, Hiroaki Shishido, Shugo Ikeda, Dai Aoki, Yoshifumi Tokiwa, Yoshinori Haga, Yoshichika Onuki

Materials Processing and Characterization Division

Research output: Contribution to journal › Article

36 Citations (Scopus)

Abstract

We have performed a high-resolution angle-resolved Ce 4d-4f resonant photoemission experiment on the heavy fermion superconductor CeIr In5. We have observed a quasiparticle band, which has an energy dispersion of ∼30 meV in the Ce 4f on-resonance spectra. The result suggests that although the 4f spectra are dominated by the localized and/or correlated character, the small itinerant component is responsible for the superconductivity in this compound.

Original language	English
Article number	224517
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	73
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.73.224517
Publication status	Published - 2006

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.73.224517

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Fujimori, S. I., Fujimori, A., Shimada, K., Narimura, T., Kobayashi, K., Namatame, H., Taniguchi, M., Harima, H., Shishido, H., Ikeda, S., Aoki, D., Tokiwa, Y., Haga, Y., & Onuki, Y. (2006). Direct observation of a quasiparticle band in CeIr In5: An angle-resolved photoemission spectroscopy study. Physical Review B - Condensed Matter and Materials Physics, 73(22), [224517]. https://doi.org/10.1103/PhysRevB.73.224517

Direct observation of a quasiparticle band in CeIr In5 : An angle-resolved photoemission spectroscopy study. / Fujimori, Shin Ichi; Fujimori, Atsushi; Shimada, Kenya; Narimura, Takamasa; Kobayashi, Kenichi; Namatame, Hirofumi; Taniguchi, Masaki; Harima, Hisatomo; Shishido, Hiroaki; Ikeda, Shugo; Aoki, Dai; Tokiwa, Yoshifumi; Haga, Yoshinori; Onuki, Yoshichika.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 73, No. 22, 224517, 2006.

Research output: Contribution to journal › Article

Fujimori, SI, Fujimori, A, Shimada, K, Narimura, T, Kobayashi, K, Namatame, H, Taniguchi, M, Harima, H, Shishido, H, Ikeda, S, Aoki, D, Tokiwa, Y, Haga, Y & Onuki, Y 2006, 'Direct observation of a quasiparticle band in CeIr In5: An angle-resolved photoemission spectroscopy study', Physical Review B - Condensed Matter and Materials Physics, vol. 73, no. 22, 224517. https://doi.org/10.1103/PhysRevB.73.224517

Fujimori, Shin Ichi ; Fujimori, Atsushi ; Shimada, Kenya ; Narimura, Takamasa ; Kobayashi, Kenichi ; Namatame, Hirofumi ; Taniguchi, Masaki ; Harima, Hisatomo ; Shishido, Hiroaki ; Ikeda, Shugo ; Aoki, Dai ; Tokiwa, Yoshifumi ; Haga, Yoshinori ; Onuki, Yoshichika. / Direct observation of a quasiparticle band in CeIr In5 : An angle-resolved photoemission spectroscopy study. In: Physical Review B - Condensed Matter and Materials Physics. 2006 ; Vol. 73, No. 22.

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AU - Namatame, Hirofumi

AU - Taniguchi, Masaki

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AU - Shishido, Hiroaki

AU - Ikeda, Shugo

AU - Aoki, Dai

AU - Tokiwa, Yoshifumi

AU - Haga, Yoshinori

AU - Onuki, Yoshichika

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