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Electric Quadrupolar Contributions in the Magnetic Phases of UNi4B
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| Title: | Electric Quadrupolar Contributions in the Magnetic Phases of UNi4B |
| Authors: | Yanagisawa, T Browse this author | | Matsumori, H Browse this author | | Saito, H Browse this author | | Hidaka, H Browse this author | | Amitsuka, H Browse this author | | Nakamura, S Browse this author | | Awaji, S Browse this author | | Gorbunov, D. I Browse this author | | Zherlitsyn, S Browse this author | | Wosnitza, J Browse this author | | Uhlířová, K Browse this author | | Vališka, M Browse this author | | Sechovský, V Browse this author |
| Issue Date: | 16-Apr-2021 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review Letters |
| Volume: | 126 |
| Issue: | 15 |
| Start Page: | 157201 |
| Publisher DOI: | 10.1103/PhysRevLett.126.157201 |
| Abstract: | We present acoustic signatures of the electric quadrupolar degrees of freedom in the honeycomb-layer compound UNi4B. The transverse ultrasonic mode C66 shows softening below 30 K both in the paramagnetic phase and antiferromagnetic phases down to ∼0.33 K. Furthermore, we traced magnetic field-temperature phase diagrams up to 30 T and observed a highly anisotropic elastic response within the honeycomb layer. These observations strongly suggest that Γ6 (E2g) electric quadrupolar degrees of freedom in localized 5f2 (J = 4) states are playing an important role in the magnetic toroidal dipole order and magnetic-field-induced phases of UNi4B, and evidence some of the U ions remain in the paramagnetic state even if the system undergoes magnetic toroidal ordering. |
| Rights: | ©2021 American Physical Society | | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/82840 |
| 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)
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Submitter: 柳澤 達也
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