Journal Article

FZJ-2022-02995

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Field-tuned quantum effects in a triangular-lattice Ising magnet

Qin, Y. ; Shen, Y. ; Liu, C. ; Wo, H. ; Gao, Y. ; Feng, Y. ; Zhang, X. ; Ding, G. ; Gu, Y. ; Wang, Q. ; Shen, S. ; Walker, H. C. ; Bewley, R. ; Xu, J. ; Boehm, M. ; Steffens, P. ; Ohira-Kawamura, S. ; Murai, N. ; Schneidewind, A.MLZ*FZJ* ; Tong, X. ; Chen, G. (Corresponding author) ; Zhao, J. (Corresponding author)Extern*

2022
Science China Press [S.l.]

This record in other databases:    

Please use a persistent id in citations: http://hdl.handle.net/2128/32834  doi:10.1016/j.scib.2021.08.012

Abstract: 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.

Keyword(s): Magnetic Materials (1st) ; Magnetism (2nd)

---

Contributing Institute(s):

1. JCNS-FRM-II (JCNS-FRM-II)
2. Heinz Maier-Leibnitz Zentrum (MLZ)
3. Streumethoden (JCNS-2)
4. JCNS-4 (JCNS-4)

Research Program(s):

1. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)
2. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)

Experiment(s):

1. PANDA: Cold three axes spectrometer (SR2)

Appears in the scientific report 2022

---

Database coverage:
; ; BIOSIS Previews ; Biological Abstracts ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 20 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection ; Zoological Record

---