62 citations · 240 across the 14 of their papers we have counts for
14 papers
Ultrafast lattice and electron dynamics induced in a PbSe crystal by an intense terahertz pulse
A. A. Melnikov, Yu. G. Selivanov, D. G. Poydashev +1
We have studied the ultrafast optical response of a PbSe crystal to an intense picosecond terahertz pulse with a peak electric field strength of up to 500 kV/cm. The reflect…
Terahertz electro-optic effect in BiSe crystals
A. A. Melnikov, A. A. Sokolik, Yu. G. Selivanov +1
We report the observation of the electro-optic effect in BiSe crystals induced by an intense single-cycle terahertz pulse. The effect reveals itself as a transient change o…
Anharmonic coherent dynamics of the soft phonon mode of a PbTe crystal
A. A. Melnikov, Yu. G. Selivanov, S. V. Chekalin
We investigate the ultrafast optical response of PbTe to an intense single-cycle terahertz pulse, resonant with the soft transverse optical (TO) phonon mode of the crystal. We dete…
Anomalous behavior of the infrared-active phonon mode in a BiSrSe crystal
A. A. Melnikov, K. N. Boldyrev, Yu. G. Selivanov +1
We have studied spectral evolution of the phonon line of a topological insulator BiSrSe with temperature. Unlike the Raman-active phonons, the mode…
Breaking of Ginzburg-Landau description in the temperature dependence of the anisotropy in the nematic superconductor
M. I. Bannikov, R. S. Akzyanov, N. K. Zhurbina +5
Nematic superconductors are characterized by an apparent crystal symmetry breaking that results in the anisotropy of the in-plane upper critical magnetic field . The symmet…
Link between superconductivity and a Lifshitz transition in intercalated BiSe
A. Almoalem, I. Silber, S. Sandik +12
Topological superconductivity is an exotic phase of matter in which the fully gapped superconducting bulk hosts gapless Majorana surface states protected by topology. Intercalation…
Bulk cyclotron resonance in the topological insulator Bi2Te3
Dmytro L. Kamenskyi, Artem V. Pronin, Hadj M. Benia +3
We investigated magneto-optical response of undoped Bi2Te3 films in the terahertz frequency range (0.3 - 5.1 THz, 10 - 170 cm-1) in magnetic fields up to 10 T. The optical transmis…
Phonon-driven ultrafast symmetry lowering in a BiSe crystal
A. A. Melnikov, Yu. G. Selivanov, S. V. Chekalin
Selective excitation of coherent high-amplitude vibrations of atoms in a solid can induce exotic nonequilibrium states, in which the character of interactions between electronic, m…
Strain-driven nematicity of the odd-parity superconductivity in SrBiSe
A. Yu. Kuntsevich, M. A. Bryzgalov, V. P. Martovitskii +3
We present a novel experimental evidence for the odd-parity nematic superconductivity in high-quality single crystals of doped topological insulator SrBiSe. The X-ray d…
Effect of Sr doping on structure, morphology and transport properties of BiSe epitaxial thin films
S. O. Volosheniuk, Yu. G. Selivanov, M. A. Bryzgalov +2
We report molecular beam epitaxy growth of Sr-doped BiSe films on (111) BaF substrate, aimed to realize unusual superconducting properties inherent to SrBiSe$_3…
Structural distortion behind the nematic superconductivity in SrBiSe
A. Yu. Kuntsevich, M. A. Bryzgalov, V. A. Prudkoglyad +3
An archetypical layered topological insulator BiSe becomes superconductive upon doping with Sr, Nb or Cu. Superconducting properties of these materials in the presence of i…
Magnetic and magnetotransport properties of BiSe thin films doped by Eu
B. A. Aronzon, L. N. Oveshnikov, V. A. Prudkoglyad +6
Structural, magnetic and magnetotransport properties of (BiEu)Se thin films have been studied experimentally as a function of Eu content. The films were synthes…
Coherent phonons in a film generated by an intense single-cycle THz pulse
A. A. Melnikov, K. N. Boldyrev, Yu. G. Selivanov +3
We report an observation of coherent phonons of , , , and symmetry generated in a single-crystal film of by an intense single-cycle THz p…
Low temperature Hall effect in bismuth chalcogenides thin films
A. Yu. Kuntsevich, A. A. Gabdullin, V. A. Prudkogliad +3
Bismuth chalcogenides are the most studied 3D topological insulators. As a rule, at low temperatures thin films of these materials demonstrate positive magnetoresistance due to wea…