Observation of spontaneous x-ray magnetic circular dichroism in a chiral antiferromagnet

被引：11

作者：

Sakamoto, Shoya ^{[1
]}

Higo, Tomoya ^{[2
,3
]}

Shiga, Masanobu ^{[1
]}

Amemiya, Kenta ^{[4
]}

Nakatsuji, Satoru ^{[1
,2
,3
,5
,6
,7
]}

Miwa, Shinji ^{[1
,3
,5
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[2] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[3] Japan Sci & Technol Agcy JST, CREST, 4-1-8 Honcho, Kawaguchi, Saitama 3320012, Japan

[4] KEK, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan

[5] Univ Tokyo, Transscale Quantum Sci Inst, Bunkyo Ku, Tokyo 1130033, Japan

[6] Johns Hopkins Univ, Inst Quantum Matter, Baltimore, MD 21218 USA

[7] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

来源：

PHYSICAL REVIEW B | 2021年 / 104卷 / 13期

关键词：

ANISOTROPIES; PROBE;

D O I：

10.1103/PhysRevB.104.134431

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

X-ray magnetic circular dichroism (XMCD) signals are usually absent in antiferromagnets. In this paper, we report the observation of spontaneous XMCD spectra originating from the inverse triangular spin structure, or the polarization of the cluster magnetic octupole, in the chiral antiferromagnet Mn3Sn thin film. The result is consistent with the recent theoretical predictions that the inverse triangular spin structure can give rise to finite XMCD signals in the absence of net magnetization [J. Phys. Soc. Jpn 89, 083703 (2020) and Phys. Rev. Lett. 126, 157402 (2021)].

引用

页数：6

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