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Electric Quadrupolar Contributions in the Magnetic Phases of UNi4B
| 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 | | Uhlirova, K. Browse this author | | Valiska, M. Browse this author | | Sechovsky, V Browse this author |
| Issue Date: | 12-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 C-66 shows softening below 30 K both in the paramagnetic phase and antiferromagnetic phases down to similar 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 Gamma(6) (E-2g) electric quadrupolar degrees of freedom in localized 5f(2) (J = 4) states are playing an important role in the magnetic toroidal dipole order and magnetic-field-induced phases of UNi4 B, and evidence some of the U ions remain in the paramagnetic state even if the system undergoes magnetic toroidal ordering. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/82202 |
| 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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