Annotation
Coupled oscillations of electron and nuclear systems in an easy-plane antiferromagnet in strong magnetic fields are considered. Based on the Bogolyubov <$\!u$-$v\!$> transformation a spectrum of these oscillations and a new $\eps_{2\bf k}$ mode of collective oscillations in an antiferromagnet have been found. A dynamic shift of a nuclear magnetic resonance frequency associated with this mode has been determined.
© 2016 Publisher M.V.Lomonosov Moscow State University
Authors
V.L. Marchenko, A.M. Savchenko, В.I. Sadovnikov
Department of Quantum Statistics and Field Theory, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
Department of Quantum Statistics and Field Theory, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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