Photoemission study on heavy fermion superconductors

Shin ichi Fujimori; Yuji Saitoh; Tetsuo Okane; Hiroshi Yamagami; Atsushi Fujimori; Kenya Shimada; Hiroshi Namatame; Masaki Taniguchi; Hiroaki Shishido; Dai Aoki; Shugo Ikeda; Yoshinori Haga; Etsuji Yamamoto; Yoshichika Onuki

doi:10.1016/j.physc.2007.03.027

Photoemission study on heavy fermion superconductors

Shin ichi Fujimori, Yuji Saitoh, Tetsuo Okane, Hiroshi Yamagami, Atsushi Fujimori, Kenya Shimada, Hiroshi Namatame, Masaki Taniguchi, Hiroaki Shishido, Dai Aoki, Shugo Ikeda, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki

IMR - Materials Processing and Characterization Division

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

2 Citations (Scopus)

Abstract

We have performed angle-resolved photoemission experiments for heavy fermion superconductors CeIrIn₅ and UPd₂Al₃. It was found that the Ce 4f electrons in CeIrIn₅ are nearly localized, but the small itinerant component also exists in the ARPES spectra. For UPd₂Al₃, on the other hand, the strongly dispersive bands of U 5f origin were observed, suggesting that the U 5f electronic states are dominated by the itinerant character. We have found that these two compounds have very different natures of f-electrons although both of them show the coexistence or competition of the superconductivity and the magnetic ordering.

Original language	English
Pages (from-to)	657-658
Number of pages	2
Journal	Physica C: Superconductivity and its Applications
Volume	460-462 I
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2007.03.027
Publication status	Published - 2007 Sept 1

Keywords

Angle-resolved photoemission spectroscopy
Band structure
CeIrIn
Fermi surface
UPdAl

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10.1016/j.physc.2007.03.027

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title = "Photoemission study on heavy fermion superconductors",

abstract = "We have performed angle-resolved photoemission experiments for heavy fermion superconductors CeIrIn5 and UPd2Al3. It was found that the Ce 4f electrons in CeIrIn5 are nearly localized, but the small itinerant component also exists in the ARPES spectra. For UPd2Al3, on the other hand, the strongly dispersive bands of U 5f origin were observed, suggesting that the U 5f electronic states are dominated by the itinerant character. We have found that these two compounds have very different natures of f-electrons although both of them show the coexistence or competition of the superconductivity and the magnetic ordering.",

keywords = "Angle-resolved photoemission spectroscopy, Band structure, CeIrIn, Fermi surface, UPdAl",

author = "Fujimori, {Shin ichi} and Yuji Saitoh and Tetsuo Okane and Hiroshi Yamagami and Atsushi Fujimori and Kenya Shimada and Hiroshi Namatame and Masaki Taniguchi and Hiroaki Shishido and Dai Aoki and Shugo Ikeda and Yoshinori Haga and Etsuji Yamamoto and Yoshichika Onuki",

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doi = "10.1016/j.physc.2007.03.027",

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T1 - Photoemission study on heavy fermion superconductors

AU - Fujimori, Shin ichi

AU - Saitoh, Yuji

AU - Okane, Tetsuo

AU - Yamagami, Hiroshi

AU - Fujimori, Atsushi

AU - Shimada, Kenya

AU - Namatame, Hiroshi

AU - Taniguchi, Masaki

AU - Shishido, Hiroaki

AU - Aoki, Dai

AU - Ikeda, Shugo

AU - Haga, Yoshinori

AU - Yamamoto, Etsuji

AU - Onuki, Yoshichika

PY - 2007/9/1

Y1 - 2007/9/1

N2 - We have performed angle-resolved photoemission experiments for heavy fermion superconductors CeIrIn5 and UPd2Al3. It was found that the Ce 4f electrons in CeIrIn5 are nearly localized, but the small itinerant component also exists in the ARPES spectra. For UPd2Al3, on the other hand, the strongly dispersive bands of U 5f origin were observed, suggesting that the U 5f electronic states are dominated by the itinerant character. We have found that these two compounds have very different natures of f-electrons although both of them show the coexistence or competition of the superconductivity and the magnetic ordering.

AB - We have performed angle-resolved photoemission experiments for heavy fermion superconductors CeIrIn5 and UPd2Al3. It was found that the Ce 4f electrons in CeIrIn5 are nearly localized, but the small itinerant component also exists in the ARPES spectra. For UPd2Al3, on the other hand, the strongly dispersive bands of U 5f origin were observed, suggesting that the U 5f electronic states are dominated by the itinerant character. We have found that these two compounds have very different natures of f-electrons although both of them show the coexistence or competition of the superconductivity and the magnetic ordering.

KW - Angle-resolved photoemission spectroscopy

KW - Band structure

KW - CeIrIn

KW - Fermi surface

KW - UPdAl

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U2 - 10.1016/j.physc.2007.03.027

DO - 10.1016/j.physc.2007.03.027

M3 - Article

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SN - 0921-4534

VL - 460-462 I

SP - 657

EP - 658

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - SPEC. ISS.

ER -

Photoemission study on heavy fermion superconductors

Abstract

Keywords

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