Soft X-ray absorption magnetic circular dichroism study of ferromagnetic superconductor UGe 2

Tetsuo Okane; Jun Okamoto; Kazutoshi Mamiya; Shin Ichi Fujimori; Yukiharu Takeda; Yuji Saitoh; Yasuji Muramatsu; Atsushi Fujimori; Yoshinori Haga; Etsuji Yamamoto; Arata Tanaka; Tetsuo Honma; Yoshihiko Inada; Yoshichika Onuki

doi:10.1143/JPSJ.75.024704

Soft X-ray absorption magnetic circular dichroism study of ferromagnetic superconductor UGe ₂

Tetsuo Okane, Jun Okamoto, Kazutoshi Mamiya, Shin Ichi Fujimori, Yukiharu Takeda, Yuji Saitoh, Yasuji Muramatsu, Atsushi Fujimori, Yoshinori Haga, Etsuji Yamamoto, Arata Tanaka, Tetsuo Honma, Yoshihiko Inada, Yoshichika Onuki

Research output: Contribution to journal › Article

9 Citations (Scopus)

Abstract

X-ray absorption magnetic circular dichroism (XMCD) at the U N _4,5 edges was measured for the ferromagnetic superconductor UGe ₂ in the normal state. The orbital and spin magneic moments deduced from the sum rule analysis of the XMCD data indicate that the U atom in UGe ₂ is considered to be closer to the trivalent state rather than the tetravalent state. The temperature dependence of the XMCD signal does not show any significant anomaly at T* ∼ 30 K, where the resistivity anomaly was observed at ambient pressure. The XMCD measurement at the U N _2,3 edge indicates that the U 6d electrons have negligibly small magnetic contributions.

Original language	English
Article number	024704
Journal	journal of the physical society of japan
Volume	75
Issue number	2
DOIs	https://doi.org/10.1143/JPSJ.75.024704
Publication status	Published - Feb 1 2006

Keywords

Ferromagnetism
Magnetic circular dichroism
Superconductivity
Uranium compounds
X-ray absorption

ASJC Scopus subject areas

Physics and Astronomy(all)

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Okane, T., Okamoto, J., Mamiya, K., Fujimori, S. I., Takeda, Y., Saitoh, Y., Muramatsu, Y., Fujimori, A., Haga, Y., Yamamoto, E., Tanaka, A., Honma, T., Inada, Y., & Onuki, Y. (2006). Soft X-ray absorption magnetic circular dichroism study of ferromagnetic superconductor UGe ₂ journal of the physical society of japan, 75(2), [024704]. https://doi.org/10.1143/JPSJ.75.024704

Soft X-ray absorption magnetic circular dichroism study of ferromagnetic superconductor UGe ₂ . / Okane, Tetsuo; Okamoto, Jun; Mamiya, Kazutoshi; Fujimori, Shin Ichi; Takeda, Yukiharu; Saitoh, Yuji; Muramatsu, Yasuji; Fujimori, Atsushi; Haga, Yoshinori; Yamamoto, Etsuji; Tanaka, Arata; Honma, Tetsuo; Inada, Yoshihiko; Onuki, Yoshichika.

In: journal of the physical society of japan, Vol. 75, No. 2, 024704, 01.02.2006.

Research output: Contribution to journal › Article

Okane, Tetsuo ; Okamoto, Jun ; Mamiya, Kazutoshi ; Fujimori, Shin Ichi ; Takeda, Yukiharu ; Saitoh, Yuji ; Muramatsu, Yasuji ; Fujimori, Atsushi ; Haga, Yoshinori ; Yamamoto, Etsuji ; Tanaka, Arata ; Honma, Tetsuo ; Inada, Yoshihiko ; Onuki, Yoshichika. / Soft X-ray absorption magnetic circular dichroism study of ferromagnetic superconductor UGe ₂ In: journal of the physical society of japan. 2006 ; Vol. 75, No. 2.

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abstract = "X-ray absorption magnetic circular dichroism (XMCD) at the U N 4,5 edges was measured for the ferromagnetic superconductor UGe 2 in the normal state. The orbital and spin magneic moments deduced from the sum rule analysis of the XMCD data indicate that the U atom in UGe 2 is considered to be closer to the trivalent state rather than the tetravalent state. The temperature dependence of the XMCD signal does not show any significant anomaly at T* ∼ 30 K, where the resistivity anomaly was observed at ambient pressure. The XMCD measurement at the U N 2,3 edge indicates that the U 6d electrons have negligibly small magnetic contributions.",

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AU - Fujimori, Shin Ichi

AU - Takeda, Yukiharu

AU - Saitoh, Yuji

AU - Muramatsu, Yasuji

AU - Fujimori, Atsushi

AU - Haga, Yoshinori

AU - Yamamoto, Etsuji

AU - Tanaka, Arata

AU - Honma, Tetsuo

AU - Inada, Yoshihiko

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AB - X-ray absorption magnetic circular dichroism (XMCD) at the U N 4,5 edges was measured for the ferromagnetic superconductor UGe 2 in the normal state. The orbital and spin magneic moments deduced from the sum rule analysis of the XMCD data indicate that the U atom in UGe 2 is considered to be closer to the trivalent state rather than the tetravalent state. The temperature dependence of the XMCD signal does not show any significant anomaly at T* ∼ 30 K, where the resistivity anomaly was observed at ambient pressure. The XMCD measurement at the U N 2,3 edge indicates that the U 6d electrons have negligibly small magnetic contributions.

KW - Ferromagnetism

KW - Magnetic circular dichroism

KW - Superconductivity

KW - Uranium compounds

KW - X-ray absorption

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