Soft X-ray magnetic circular dichroism study of uranium monochalcogenides at uranium N4,5 absorption edges

被引：15

作者：

Okane, Tetsuo ^{[1
]}

Takeda, Yukiharu ^{[1
]}

Okamoto, Jun ^{[1
]}

Mamiya, Kazutoshi ^{[1
]}

Ohkchi, Takuo ^{[1
]}

Fujimori, Shin-ichi ^{[1
]}

Saitoh, Yuji ^{[1
]}

Yamagami, Hiroshi ^{[1
,2
]}

Fujimori, Atsushi ^{[1
,3
]}

Ochiai, Akira ^{[4
]}

Tanaka, Arata ^{[5
]}

机构：

[1] Japan Atom Energy Agcy, Synchrotron Radiat Res Ctr, Mikazuki, Hyogo 6795148, Japan

[2] Kyoto Sangyo Univ, Dept Phys, Kyoto 6038555, Japan

[3] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[4] Tohoku Univ, Ctr Low Temp Sci, Sendai, Miyagi 9808578, Japan

[5] Hiroshima Univ, Grad Sch Adv Sci Matter, Hiroshima 7398530, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2008年 / 77卷 / 02期

关键词：

uranium compounds; ferromagnetism; x-ray absorption; magnetic circular dichroism;

D O I：

10.1143/JPSJ.77.024706

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

X-ray magnetic circular dichroism (XMCD) was measured for the ferromagnetic uranium monochalcogenides US and USe at U N-4,N-5 absorption edges in the soft X-ray region. The obtained N-4,N-5 XMCD signal of US was comparable to the M-4,M-5 XMCD signal obtained in previous studies. From the sum-rule analysis of XMCD data, it was shown that the estimated ratios of orbital magnetic moment to spin magnetic moment vertical bar mu(L)/mu(S vertical bar) were almost the same for US and USe. The analysis of the XAS branching ratio indicated an increase in 5f electron occupation number from US to USe, which may suppress the increase in vertical bar mu(L)/mu(S)vertical bar.

引用

页数：6

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