I am trying to understand the three- and four-wave nonlinear interaction for magnetostatic surface spin-wave (MSSWs). In [1], the authors have mentioned three- and four-wave nonlinear interactions can coexist for MSSWs. So, I was wondering how to calculate the bias magnetic field for which three- and four-wave nonlinear interactions can coexist for MSSWs.
1. Bir, A. S., Grishin, S. V., Moskalenko, O. I., Pavlov, A. N., Zhuravlev, M. O., & Ruiz, D. O. (2020). Experimental observation of ultrashort hyperchaotic dark multisoliton complexes in a magnonic active ring resonator. Physical Review Letters, 125(8), 083903.