Table 1 Magnetic exchange interaction strength in different models in FePSe3

From: Thermal evolution of spin excitations in honeycomb Ising antiferromagnetic FePSe3

Model

J1

J2

J3

K1

Dz

Uniform J1

−2.30

−0.23

2.01

0

−2.74

J1a-J1b

−2.26/-0.72

0.09

1.28

0

−2.45

J1-bq

−1.32

0.12

1.28

−0.22

−2.31

  1. All units in meV. In the J1a–J1b model, the J1a indicates FM interactions in the zig-zag chain, and J1b indicates interactions between chains. J1, J2, J3 indicate the first, second, and third nearest neighbor Heisenberg exchange, respectively. K1 refers to the nearest-neighbor biquadratic interactions, and Dz stands for single-ion anisotropy.
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