101 citations · 504 across the 50 of their papers we have counts for
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Localized and extended collective optical phonon modes in regular and random arrays of contacting nanoparticles: escape from phonon confinement
S. V. Koniakhin, O. I. Utesov, A. G. Yashenkin
In the present paper, we utilize the coupled-oscillator model describing the hybridization of optical phonons in touching and/or overlapping particles in order to study the Raman s…
Ferromagnetic monolayer with interfacial Dzyaloshinskii-Moriya interaction: magnon spectrum and effect of quenched disorder
Oleg I. Utesov, Arseny V. Syromyatnikov
We discuss theoretically a ferromagnetic monolayer with an interfacial Dzyaloshinskii-Moriya interaction (iDMI) and a small axial anisotropy. It is shown that the system has a long…
Direct observation of the exchange anisotropy in the helimagnetic insulator CuOSeO
Priya R. Baral, Oleg I. Utesov, Chen Luo +4
The helical magnetic structures of cubic chiral systems are well-explained by the competition among Heisenberg exchange, Dzyaloshinskii-Moriya interaction, cubic anisotropy, and an…
Magnons in the fan phase of anisotropic frustrated antiferromagnets
Oleg I. Utesov
Elementary excitations spectrum of the fan phase of anisotropic frustrated antiferromagnets is discussed analytically. In the linear spin-wave approximation, the spectrum is determ…