This title appears in the Scientific Report :
2022
Please use the identifier:
http://dx.doi.org/10.1016/j.scib.2021.08.012 in citations.
Please use the identifier: http://hdl.handle.net/2128/32834 in citations.
Field-tuned quantum effects in a triangular-lattice Ising magnet
Field-tuned quantum effects in a triangular-lattice Ising magnet
We report thermodynamic and neutron scattering measurements of the triangular-lattice quantum Ising magnet TmMgGaO4 in longitudinal magnetic fields. Our experiments reveal a quasi-plateau state induced by quantum fluctuations. This state exhibits an unconventional non-monotonic field and temperature...
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Personal Name(s): | Qin, Yayuan |
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Shen, Yao / Liu, Changle / Wo, Hongliang / Gao, Yonghao / Feng, Yu / Zhang, Xiaowen / Ding, Gaofeng / Gu, Yiqing / Wang, Qisi / Shen, Shoudong / Walker, Helen C. / Bewley, Robert / Xu, Jianhui / Boehm, Martin / Steffens, Paul / Ohira-Kawamura, Seiko / Murai, Naoki / Schneidewind, Astrid / Tong, Xin / Chen, Gang (Corresponding author) / Zhao, Jun (Corresponding author) | |
Contributing Institute: |
JCNS-4; JCNS-4 Streumethoden; JCNS-2 Heinz Maier-Leibnitz Zentrum; MLZ JCNS-FRM-II; JCNS-FRM-II |
Published in: | Science bulletin, 67 (2022) 1, S. 38 - 44 |
Imprint: |
[S.l.]
Science China Press
2022
|
DOI: |
10.1016/j.scib.2021.08.012 |
Document Type: |
Journal Article |
Research Program: |
Materials – Quantum, Complex and Functional Materials Jülich Centre for Neutron Research (JCNS) (FZJ) |
Subject (ZB): | |
Link: |
Restricted OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/32834 in citations.
We report thermodynamic and neutron scattering measurements of the triangular-lattice quantum Ising magnet TmMgGaO4 in longitudinal magnetic fields. Our experiments reveal a quasi-plateau state induced by quantum fluctuations. This state exhibits an unconventional non-monotonic field and temperature dependence of the magnetic order and excitation gap. In the high field regime where the quantum fluctuations are largely suppressed, we observed a disordered state with coherent magnon-like excitations despite the suppression of the spin excitation intensity. Through detailed semi-classical calculations, we are able to understand these behaviors quantitatively from the subtle competition between quantum fluctuations and frustrated Ising interactions. |