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Spin-wave approach to the two-magnon Raman scattering in aJ1x−J1y−J2−Jcantiferromagnetic Heisenberg model

Changle Liu, Anmin Zhang, Qingming Zhang, Rong Yu, Xiaoqun Wang
2017 Physical review B  

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2015 pre-print arXiv:1510.03359v1 fatcat:nigzkehupbclpgpqmsj36jtwuq
We study the two-magnon non-resonant Raman scattering in the (pi,pi) and (pi,0) ordered antiferromagnetic phases of a J1x-J1y-J2-Jc Heisenberg model on the tetragonal lattice within the framework of the spin-wave theory. We discuss the effects of various tuning factors to the two-magnon Raman spectra. We find that both the magnetic frustration J2/J1 and the interlayer exchange coupling Jc may significantly affect the spectra in both the B1g and A1g' channels in the (pi,pi) Neel ordered phase.
more » ... reover, we find a splitting of the two-magnon peak in the (pi,0) antiferromagnetic phase. We further discuss the implications of our results to the BaMnBi2 and iron pnictide systems.
doi:10.1103/physrevb.95.104431 fatcat:opo6ax4z6jffplci2rjgfixf2y
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Changle Liu, Anmin Zhang, Qingming Zhang, Rong Yu, Xiaoqun Wang. "Spin-wave approach to the two-magnon Raman scattering in aJ1x−J1y−J2−Jcantiferromagnetic Heisenberg model." Physical review B 95.10 (2017)