Zobrazeno 1 - 10
of 465
pro vyhledávání: '"Streltsov, S"'
Publikováno v:
JETP Lett. 119, 518 (2024)
Raman spectroscopy together with density functional calculations were used to study lattice dynamics in a layered honeycomb cobaltite Na$_3$Co$_2$SbO$_6$, which can host a field-induced phase related with the Kitaev physics. We show that there develo
Externí odkaz:
http://arxiv.org/abs/2403.16943
Publikováno v:
JETP Letters, 2023, Vol. 118, No. 10, pp. 738-741
Rattling phonon modes are known to be origin of various anomalous physical properties such as superconductivity, suppression of thermal conductivity, enhancement of specific heat etc. By means of DFT+$U$ calculations we directly show presence of the
Externí odkaz:
http://arxiv.org/abs/2401.01205
Autor:
Khomskii, D. I., Streltsov, S. V.
Publikováno v:
Chapter to Encyclopedia of Condensed Matter Physics (2nd edition), 2, 98 (2024)
In this article we give a general survey of the main properties of magnetic oxides - mostly the oxides of transition metals, but sometime also containing rare earths ions. This is a very rich class of materials, among which there are insulators and m
Externí odkaz:
http://arxiv.org/abs/2212.14176
Autor:
Irkhin, V. Yu., Streltsov, S. V.
Publikováno v:
Journal of Superconductivity and Novel Magnetism, vol. 35, no. 8, p. 2135-2140 (2022)
A survey of scientific and social activity of S. V. Vonsovsky is presented. His fundamental works on the theory of electronic properties and magnetism of transition and rare-earth metals and their compounds are reviewed. The historical development of
Externí odkaz:
http://arxiv.org/abs/2209.04335
Autor:
Vavilova, E., Vasilchikova, T., Vasiliev, A., Mikhailova, D., Nalbandyan, V., Zvereva, E., Streltsov, S. V.
Recent theoretical studies have suggested that Kitaev physics and such effects as formation of a mysterious spin-liquid state can be expected not only in RuCl3 and iridates, but also in conventional $3d$ transition metal compounds. Using DC and AC ma
Externí odkaz:
http://arxiv.org/abs/2209.00846
Publikováno v:
Phys. Rev. B 105, 024406 (2022)
Using {\it ab initio} band structure calculations we show that mineral cubanite, CuFe$_2$S$_3$, demonstrates an orbital-selective behavior with some of the electrons occupying molecular orbitals of $x^2-y^2$ symmetry and others localized at atomic or
Externí odkaz:
http://arxiv.org/abs/2205.09568
Publikováno v:
Physical Review B 106, L180401 (2022)
The on-site Coulomb repulsion $U$ is the key ingredient for describing the magnetic properties of Mott insulators, leading to a popular believe that many limitations of the density-functional theory based methods can be cured by artificially incorpor
Externí odkaz:
http://arxiv.org/abs/2205.08690
Publikováno v:
Phys. Rev. B, 105(20), 205142 (2022)
We study an interplay between the orbital degeneracy and spin-orbit coupling giving rise to spin-orbital entangled states. As a specific example, we analyze the interaction of electrons occupying triply degenerate single-ion $t_{2g}$ levels with trig
Externí odkaz:
http://arxiv.org/abs/2203.02243
Autor:
Solovyev, I. V., Nikolaev, S. A., Ushakov, A. V., Irkhin, V. Yu., Tanaka, A., Streltsov, S. V.
Publikováno v:
Physical Review B 105, 014415 (2022)
Based on the density functional theory, we examine the origin of ferromagnetism in the Weyl semimetal Co$_3$Sn$_2$S$_2$ using different types of response theories. We argue that the magnetism of Co$_3$Sn$_2$S$_2$ has a dual nature and bears certain a
Externí odkaz:
http://arxiv.org/abs/2111.02577
Orbital Peierls mechanism of the formation of molecular clusters in Na2Ti3Cl8 and in similar systems
Publikováno v:
Phys. Rev. Lett. 127, 049701 (2021)
Recently the structural transition in Na2Ti3Cl8 at 200 K with the formation of triangular Ti3 clusters was studied by ab-initio calculations in PRL 124, 167203 (2020). It was concluded on the basis of the DFT+U results that the usual band effects are
Externí odkaz:
http://arxiv.org/abs/2108.01844