Detecting halfmetallic electronic structures of spintronic materials in a magnetic field

被引：3

作者：

Fujiwara, H. ^{[1
]}

Umetsu, R. Y. ^{[2
,3
,4
]}

Kuroda, F. ^{[5
]}

Miyawaki, J. ^{[6
,7
,8
]}

Kashiuchi, T. ^{[1
]}

Nishimoto, K. ^{[1
]}

Nagai, K. ^{[1
]}

Sekiyama, A. ^{[1
]}

Irizawa, A. ^{[5
]}

Takeda, Y. ^{[9
]}

Saitoh, Y. ^{[9
]}

Oguchi, T. ^{[5
,10
]}

Harada, Y. ^{[6
,7
]}

Suga, S. ^{[5
,11
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Div Mat Phys, 1-3 Machikaneyama, Toyonaka, Osaka 5608531, Japan

[2] Tohoku Univ, Inst Mat Res, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

[3] Tohoku Univ, Ctr Spintron Res Network, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

[4] Tohoku Univ, Ctr Sci & Innovat Spintron, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

[5] Osaka Univ, SANKEN, 8-1 Mihogaoka, Ibaraki, Osaka 5670047, Japan

[6] Univ Tokyo, Inst Solid State Phys, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778581, Japan

[7] Univ Tokyo, Synchrotron Radiat Res Org, 1-1-1 Koto, Sayo, Hyogo 6795148, Japan

[8] Natl Inst Quantum & Radiol Sci & Technol, Inst Adv Synchrotron Light Source, 6-6-11 Aoba, Sendai, Miyagi 9808579, Japan

[9] Japan Atom Energy Agcy JAEA, Mat Sci Res Ctr, Sayo, Hyogo 6795148, Japan

[10] Osaka Univ, Ctr Spintron Res Network, 1-3 Machikaneyama, Toyonaka, Osaka 5608531, Japan

[11] Forschungszentrum Julich, PGI 6, D-52425 Julich, Germany

来源：

SCIENTIFIC REPORTS | 2021年 / 11卷 / 01期

关键词：

HALF-METALLIC FERRIMAGNETISM; HEUSLER ALLOYS;

D O I：

10.1038/s41598-021-97992-z

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Band-gap engineering is one of the fundamental techniques in semiconductor technology and also applicable in next generation spintronics using the spin degree of freedom. To fully utilize the spintronic materials, it is essential to optimize the spin-dependent electronic structures in the operando conditions by applying magnetic and/or electric fields. Here we present an advanced spectroscopic technique to probe the spin-polarized electronic structures by using magnetic circular dichroism (MCD) in resonant inelastic soft X-ray scattering (RIXS) under an external magnetic field. Thanks to the spin-selective dipole-allowed transitions in RIXS-MCD, we have successfully demonstrated the direct evidence of the perfectly spin-polarized electronic structures for the prototypical halfmetallic Heusller alloy Co-2 MnSi. RIXS-MCD is a promising tool to probe the spin-dependent carriers and band-gap induced in the buried magnetic layers in an element specific way under the operando conditions.

引用

页数：9

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