2017/11/01 by Yu. M. Bunkov, A. V. Klochkov, T. R. Safin +2 · 2 citations
Physics and Astronomy · #Quantum, superfluid, helium dynamics #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism
paper · doi:10.1134/s0021364017220076
The low-frequency phase modulation of a radio-frequency field is used to excite a low-frequency collective mode in the Bose−Einstein condensate (BEC) of quasinuclear magnons in an antiferromagnetic material with the Suhl−Nakamura interaction. This oscillation mode is similar to the Goldstone torsional mode observed in antiferromagnetic superfluid 3He–B. The results clearly demonstrate the existence of the BEC in the systems under study.