ИСТИНА

In modern condensed matter physics, special attention is paid to the study of complex magnetic structures and, in particular, systems with helimagnetism. The helicoidal magnetic order can arise due to the competition of ferro- and antiferromagnetic interactions in frustrated systems or the Dzyaloshinsky-Moriya interaction. Helimagnetism, as a rule, is associated with a violation of the central symmetry due to the nonequivalence of the directions in the crystal relative to the propagation vector of the helicoid. Many classes of helimagnets are characterized by non-trivial properties (spontaneous electric polarization, magnetoelectric interaction, magnetoresistance), which also determines the possible use of helimagnets for the development of new functional materials for spintronics and magnetic memory. In this talk, application of NMR spectroscopy to study various properties of helical magnetic systems is discussed. In the introduction, a brief overview of basic principles of solid state NMR and main characteristics of helical spin structures is presented.