%0 Journal Article
%A Qin, Yayuan
%A Shen, Yao
%A Liu, Changle
%A Wo, Hongliang
%A Gao, Yonghao
%A Feng, Yu
%A Zhang, Xiaowen
%A Ding, Gaofeng
%A Gu, Yiqing
%A Wang, Qisi
%A Shen, Shoudong
%A Walker, Helen C.
%A Bewley, Robert
%A Xu, Jianhui
%A Boehm, Martin
%A Steffens, Paul
%A Ohira-Kawamura, Seiko
%A Murai, Naoki
%A Schneidewind, Astrid
%A Tong, Xin
%A Chen, Gang
%A Zhao, Jun
%T Field-tuned quantum effects in a triangular-lattice Ising magnet
%J Science bulletin
%V 67
%N 1
%@ 2095-9273
%C [S.l.]
%I Science China Press
%M FZJ-2022-02995
%P 38 - 44
%D 2022
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000734899600009
%R 10.1016/j.scib.2021.08.012
%U https://juser.fz-juelich.de/record/909078