Imaging the magnetic structures of artificial quasicrystal magnets using resonant coherent diffraction of circularly polarized X-rays

被引：5

作者：

Sung, Daeho ^{[1
]}

Jung, Chulho ^{[1
]}

Cho, Byeong-Gwan ^{[1
,2
]}

Jo, Wonhyuk ^{[3
]}

Han, Hee-Sung ^{[4
]}

Lee, Ki-Suk ^{[4
]}

Bhat, Vinayak ^{[5
]}

Farmer, Barry ^{[5
]}

De Long, L. E. ^{[5
]}

Lee, Ki Bong ^{[1
]}

Keavney, D. J. ^{[6
]}

Lee, Dong Ryeol ^{[3
]}

Song, Changyong ^{[1
]}

机构：

[1] POSTECH, Dept Phys, Pohang 37673, South Korea

[2] Pohang Accelerator Lab, Pohang 37673, South Korea

[3] Soongsil Univ, Dept Phys, Seoul 06978, South Korea

[4] UNIST, Sch Mat Sci & Engn, Ulsan 44919, South Korea

[5] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA

[6] Argonne Natl Lab, Xray Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA

来源：

NANOSCALE | 2018年 / 10卷 / 27期

基金：

新加坡国家研究基金会;

关键词：

SPIN-ICE; PTYCHOGRAPHY; FRUSTRATION; NANOSCALE; DICHROISM; DYNAMICS;

D O I：

10.1039/c8nr03733g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Unraveling nanoscale spin structures has long been an important activity addressing various scientific interests, that are also readily adaptable to technological applications. This has invigorated the development of versatile nanoprobes suitable for imaging specimens under native conditions. Here we have demonstrated the resonant coherent diffraction of an artificial quasicrystal magnet with circularly polarized X-rays. The nanoscale magnetic structure was revealed from X-ray speckle patterns by comparing with micromagnetic simulations, as a step toward understanding the intricate relationship between the chemical and spin structures in an aperiodic quasicrystal lattice. Femtosecond X-ray pulses from free electron lasers are expected to immediately extend the current work to nanoscale structure investigations of ultrafast spin dynamics, surpassing the present spatio-temporal resolution.

引用

页码：13159 / 13164

页数：6

共 40 条

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