TY - JOUR
T1 - Broken C4 symmetry in the tetragonal state of uniaxial strained BaCo0.9Ni0.1 S1.9
AU - Shamoto, Shin Ichi
AU - Yamauchi, Hiroki
AU - Ikeuchi, Kazuhiko
AU - Kajimoto, Ryoichi
AU - Ieda, Jun'Ichi
N1 - Publisher Copyright:
© 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2021/2/22
Y1 - 2021/2/22
N2 - A compound with large anions is known to show large compressibility, whereby a novel response may emerge from the degenerated state by a uniaxial pressure. Neutron scattering study of BaCo0.9Ni0.1S1.9 crystal reveals that the tetragonal insulating state has two magnetic domains with in-plane anisotropic antiferromagnetic wave vectors Q1=(π,0) and Q2=(0,π). The magnetic order with in-plane broken C4 symmetry is realized as a twin of these two domains in the tetragonal state without any strain. One magnetic domain with Q2 becomes dominant under a weak strain without any appreciable structural distortion. Correspondingly, the in-plane broken C4 symmetry is also observed in the in-plane magnetic excitation of the tetragonal state.
AB - A compound with large anions is known to show large compressibility, whereby a novel response may emerge from the degenerated state by a uniaxial pressure. Neutron scattering study of BaCo0.9Ni0.1S1.9 crystal reveals that the tetragonal insulating state has two magnetic domains with in-plane anisotropic antiferromagnetic wave vectors Q1=(π,0) and Q2=(0,π). The magnetic order with in-plane broken C4 symmetry is realized as a twin of these two domains in the tetragonal state without any strain. One magnetic domain with Q2 becomes dominant under a weak strain without any appreciable structural distortion. Correspondingly, the in-plane broken C4 symmetry is also observed in the in-plane magnetic excitation of the tetragonal state.
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U2 - 10.1103/PhysRevResearch.3.013169
DO - 10.1103/PhysRevResearch.3.013169
M3 - Article
AN - SCOPUS:85115903780
SN - 2643-1564
VL - 3
JO - Physical Review Research
JF - Physical Review Research
IS - 1
M1 - 013169
ER -