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Theoretical study of the nonlinear magnon-phonon coupling in CoF2
Shuang Liu1, Qian Wang1, Meng-Qiu Long1
1School of Physics, Central South University, Changsha, People's Republic of China.
None:
The coupling and interplay between magnon and phonon are important topics for spintronics and magnonics. In this work we studied the nonlinear magnon-phonon coupling in CoF2. First-principles calculations demonstrate that the antiferromagnetic resonance magnon drives a phonon with B1gcharacter; the oscillating driving force has a frequency twice of that of the magnon. Comparing with similar materials indicates a strong correlation between the strength of nonlinear magnon-phonon coupling and the orbital magnetic moment of the magnetic ion. This work pave the way for theoretical study of nonlinear magnon-phonon coupling.
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