Goldstone mode of a magnon Bose−Einstein condensate in MnCO 3

Yu. M. Bunkov; A. V. Klochkov; T. R. Safin; K. R. Safiullin; M. S. Tagirov

doi:10.1134/S0021364017220076

Goldstone mode of a magnon Bose−Einstein condensate in MnCO₃

作者: Bunkov Y.M.¹, Klochkov A.V.¹, Safin T.R.¹, Safiullin K.R.¹^,2, Tagirov M.S.¹^,2
隶属关系:
1. Kazan Federal University
2. Institute of Perspective Research
期: 卷 106, 编号 10 (2017)
页面: 677-681
栏目: Condensed Matter
URL: https://ogarev-online.ru/0021-3640/article/view/160707
DOI: https://doi.org/10.1134/S0021364017220076
ID: 160707

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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.