|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >
Cluster Toroidal Multipoles Formed by Electric-Quadrupole and Magnetic- Octupole Trimers : A Possible Scenario for Hidden Orders in Ca5Ir3O12
| Title: | Cluster Toroidal Multipoles Formed by Electric-Quadrupole and Magnetic- Octupole Trimers : A Possible Scenario for Hidden Orders in Ca5Ir3O12 |
| Authors: | Hayami, Satoru Browse this author | | Tsutsui, Satoshi Browse this author →KAKEN DB | | Hanate, Hiroki Browse this author | | Nagasawa, Nobumoto Browse this author | | Yoda, Yoshitaka Browse this author →KAKEN DB | | Matsuhira, Kazuyuki Browse this author →KAKEN DB |
| Issue Date: | 15-Mar-2023 |
| Publisher: | 日本物理学会 (Physical Society of Japan) |
| Journal Title: | Journal of the Physical Society of Japan (JPSJ) |
| Volume: | 92 |
| Issue: | 3 |
| Start Page: | 33702 |
| Publisher DOI: | 10.7566/JPSJ.92.033702 |
| Abstract: | Cluster multipole orderings composed of atomic high-rank multipole moments are theoretically investigated with a 5d-electron compound Ca5Ir3O12 in mind. Ca5Ir3O12 exhibits two hidden orders: One is an intermediate-temperature phase with time-reversal symmetry and the other is a low-temperature phase without time-reversal symmetry. By performing the symmetry and augmented multipole analyses for a d-orbital model under the hexagonal point group D3h, we find that the 120 degrees-type ordering of the electric quadrupole corresponds to cluster electric toroidal dipole ordering with the electric ferroaxial moment, which can become the microscopic origin of the intermediate-temperature phase in Ca5Ir3O12. Furthermore, based on 193Ir synchrotron-radiation-based Mossbauer spectroscopy, we propose that the low -temperature phase in Ca5Ir3O12 is regarded as a coexisting state with cluster electric toroidal dipole and cluster magnetic toroidal quadrupole, the latter of which is formed by the 120 degrees-type ordering of the magnetic octupole and accompanies a small uniform magnetization as a secondary effect. Our results provide a clue to two hidden phases in Ca5Ir3O12. |
| Rights: | © 2023 The Physical Society of Japan |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/91375 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 速水 賢
|
