Suppression of thermal stability by rotating field.

Resonant suppression of thermal stability of the nanoparticle magnetization by a rotating magnetic field.
S. I. Denisov, A. Yu. Polyakov, and T. V. Lyutyy
Phys. Rev. B 84, 174410 (2011)

Diagram of the precessional modes for σρ = +1. The regions in the h-ω plane where different P modes exist
at σρ = +1 are denoted as P+1 (white) and P +1 (light-green). The Q mode is realized in the white shaded region.