| Title | Observation of magnetoelastic effects in a quasi-one-dimensional spiral magnet |
| Authors | Wang, Chong Yu, Daiwei Liu, Xiaoqiang Chen, Rongyan Du, Xinyu Hu, Biaoyan Wang, Lichen Iida, Kazuki Kamazawa, Kazuya Wakimoto, Shuichi Feng, Ji Wang, Nanlin Li, Yuan |
| Affiliation | Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China. Comprehens Res Org Sci & Soc, Neutron Sci & Technol Ctr, Tokai, Ibaraki 3191106, Japan. Japan Atom Energy Agcy, Mat Sci Res Ctr, Tokai, Ibaraki 3191195, Japan. Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China. Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing 100083, Peoples R China. Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China. Feng, J (reprint author), Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China. |
| Keywords | HIGH CRITICAL-TEMPERATURE SPIN-PEIERLS TRANSITION ANTIFERROMAGNETIC CHAIN RAMAN-SCATTERING NEEL STATE CUGEO3 MULTIFERROICS PHASE LIGHT DIMERIZATION |
| Issue Date | 2017 |
| Publisher | PHYSICAL REVIEW B |
| Citation | PHYSICAL REVIEW B.2017,96(8). |
| Abstract | We present a systematic study of spin and lattice dynamics in the quasi-one-dimensional spiral magnet CuBr2, using Raman scattering in conjunction with infrared and neutron spectroscopy. Along with the development of spin correlations upon cooling, we observe a rich set of broad Raman bands at energies that correspond to phonon-dispersion energies near the one-dimensional magnetic wave vector. The low-energy bands further exhibit a distinct intensity maximum at the spiral magnetic ordering temperature. We attribute these unusual observations to two possible underlying mechanisms: (1) formation of hybrid spin-lattice excitations and/or (2) "quadrumerization" of the lattice caused by spin-singlet entanglement in competition with the spiral magnetism. |
| URI | http://hdl.handle.net/20.500.11897/471560 |
| ISSN | 2469-9950 |
| DOI | 10.1103/PhysRevB.96.085111 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 |
