This title appears in the Scientific Report :
2018
Polarized Neutron Diffraction Studies in Inorganic Chiral Magnetic Compounds
Polarized Neutron Diffraction Studies in Inorganic Chiral Magnetic Compounds
The concept of chirality, meaning left- or right-handedness, plays an essential role insymmetry properties of nature at all length scales from elementary particles to cosmic science.In material sciences, it is very important to understand the chirality in molecules, crystals andmagnetic structures b...
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Personal Name(s): | Kousaka, Y. (Corresponding author) |
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Ohishi, K. / Kakurai, K. / Hutanu, V. / Campo, J. / Ohara, S. / Suzuki, J. / Inoue, K. / Akimitsu, J. | |
Contributing Institute: |
JARA-FIT; JARA-FIT Streumethoden; JCNS-2 JCNS-FRM-II; JCNS-FRM-II |
Imprint: |
2018
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Conference: | 6th international conference on superconductivity and magnetism, Beldibi, Antalya (Turkey), 2018-04-29 - 2018-05-04 |
Document Type: |
Conference Presentation |
Research Program: |
Jülich Centre for Neutron Research (JCNS) FRM II / MLZ Quantum Condensed Matter: Magnetism, Superconductivity Controlling Collective States |
Subject (ZB): | |
Publikationsportal JuSER |
The concept of chirality, meaning left- or right-handedness, plays an essential role insymmetry properties of nature at all length scales from elementary particles to cosmic science.In material sciences, it is very important to understand the chirality in molecules, crystals andmagnetic structures both from theoretical and experimental viewpoints. Systematicunderstanding of interplay between crystallographic structure and magnetic ordering has beenan important topic in the field of magnetism. Chiral helimagnetic ordering, forming onlyright- or left-handed spiral magnetic structure, has attract much attention due to uniquemagnetic textures such as skyrmion and chiral magnetic soliton lattice [1, 2]. Therefore, it isvery important to investigate interplay between crystallographic and helimagnetic chiralitybecause sense of the helical spin structure depends on the right- or left-handed chiral crystalstructure that allows an asymmetric Dzyaloshinskii-Moriya interaction. However, there havebeen few experimental results on the interplay between crystallographic and magneticchirality due to the difficulty to synthesize homo-chiral single crystals, having only right- orleft-handed crystalline domains.First, we will present our unique crystallization technique for inorganic chiral compounds.By adapting our crystallization technique, we succeeded in obtaining the cm-orderedhomo-chiral single crystals with desired handedness. Second, we will present our polarizedneutron diffraction studies in chiral magnetic compounds CsCuCl3 and YbNi3Al9, performedon BL15 (TAIKAN) at the MLF of J-PARC in Japan, and on instrument POLI atMaier-Leibnitz Zentrum (MLZ) in Germany. We observed magnetic satellite intensity,depending on neutron polarization. Our experimental data revealed that the handedness of themagnetic helicity is coupled and directly controlled by the crystallographic lattice chirality.The results could be understood in terms of DM interaction strongly coupled to the lattice.References:1. S. Muhlbauer, B. Binz, F. Jonietz, C. Pfleiderer, A. Rosch, A. Neubauer, R. Georgii and P.Böni, Science 323, 915 (2009).2. Y. Togawa, T. Koyama, K. Takayanagi, S. Mori, Y. Kousaka, J. Akimitsu, S. Nishihara, K.Inoue, A. Ovchinnikov and J. Kishine, Phys. Rev. Lett. 108, 107202 (2012). |