We have studied the electron–phonon interaction (EPI) in multiferroic PrFe 3 (BO 3) 4
applying reflection methods in far-infrared (terahertz) spectral range and theoretical …

We report an observation of coherent phonons of E g 1, E u 1, A 1 g 1, and E g 2 symmetry
generated in a single-crystal film of Bi 2 Se 3 by an intense single-cycle THz pulse. The …

We present a comparative far-infrared reflection spectroscopy study of phonons, phase
transitions, spin-phonon, and electron-phonon interactions in isostructural multiferroic iron …

We show that femtosecond laser pulse excitation of the orthoferrite ErFeO 3 triggers pico-
and subpicosecond dynamics of magnetic and electric dipoles associated with the low …

The strong coupling between spin, lattice, and electronic degrees of freedom in magnetic
materials can produce interesting phenomena, including multiferroic and magnetodielectric …

Nickel orthoborate N i 3 (BO 3) 2 having a complex orthorhombic structure Pnnm (No. 58, Z=
2) of the kotoite type is known for quite a long time as an antiferromagnetic material below …

A brief review of recent studies of crystals doped with rare-earth ions performed at the
Institute of Spectroscopy of the Russian Academy of Sciences (ISAN) using high-resolution …

We present experimental (by means of the infrared absorption and Raman scattering
measurements at room temperature) and first-principles studies of the lattice dynamics of the …

We report on a new effect caused by the electron-phonon coupling in a stoichiometric rare-
earth antiferromagnetic crystal subjected to an external magnetic field, namely, the …

The ab initio calculation of the crystal structure and the phonon spectrum of crystals R Fe 3
(BO 3) 4 (R= Pr, Nd, Sm) has been performed in the framework of the density functional …