TY  - JOUR
A1  - Li, Yao-Dong
A1  - Shen, Yao
A1  - Li, Yuesheng
A1  - Zhao, Jun
A1  - Chen, Gang
T1  - Effect of spin-orbit coupling on the effective-spin correlation in YbMgGaO4
T2  - Physical Review B
N2  - Motivated by the recent experiments on the triangular lattice spin-liquid candidate YbMgGaO4, we explore the effect of spin-orbit coupling on the effective-spin correlation of the Yb local moments. We point out that the anisotropic interaction between the effective spins on the nearest-neighbor bonds is sufficient to reproduce the spin-wave dispersion of the fully polarized state in the presence of strong magnetic field normal to the triangular plane. We further evaluate the effective-spin correlation at zero magnetic field within the mean-field spherical approximation. We explicitly demonstrate that the nearest-neighbor anisotropic effective-spin interaction, originating from the strong spin-orbit coupling, enhances the effective-spin correlation at the M points in the Brillouin zone. We identify these results as strong evidence for the anisotropic interaction and strong spin-orbit coupling in YbMgGaO4.
Y1  - 2018
UR  - https://opus.bibliothek.uni-augsburg.de/opus4/frontdoor/index/index/docId/102371
SN  - 2469-9950
SN  - 2469-9969
VL  - 97
IS  - 12
SP  - 125105
PB  - American Physical Society (APS)
CY  - College Park, MD
ER  -