TY  - JOUR
AU  - Qin, Yayuan
AU  - Shen, Yao
AU  - Liu, Changle
AU  - Wo, Hongliang
AU  - Gao, Yonghao
AU  - Feng, Yu
AU  - Zhang, Xiaowen
AU  - Ding, Gaofeng
AU  - Gu, Yiqing
AU  - Wang, Qisi
AU  - Shen, Shoudong
AU  - Walker, Helen C.
AU  - Bewley, Robert
AU  - Xu, Jianhui
AU  - Boehm, Martin
AU  - Steffens, Paul
AU  - Ohira-Kawamura, Seiko
AU  - Murai, Naoki
AU  - Schneidewind, Astrid
AU  - Tong, Xin
AU  - Chen, Gang
AU  - Zhao, Jun
TI  - Field-tuned quantum effects in a triangular-lattice Ising magnet
JO  - Science bulletin
VL  - 67
IS  - 1
SN  - 2095-9273
CY  - [S.l.]
PB  - Science China Press
M1  - FZJ-2022-02995
SP  - 38 - 44
PY  - 2022
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000734899600009
DO  - DOI:10.1016/j.scib.2021.08.012
UR  - https://juser.fz-juelich.de/record/909078
ER  -