Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Stepanov Evgeny"'
Autor:
Stepanov, Evgeny A.
The interplay between strong electronic correlations and the inherent frustration of certain lattice geometries is a common mechanism for the formation of nontrivial states of matter. In this work, we theoretically explore the collective electronic e
Externí odkaz:
http://arxiv.org/abs/2405.19114
We analyze the role of spatial electronic correlations and, in particular, of the magnetic fluctuations in Mott insulators. A half-filled Hubbard model is solved at large strength of the repulsion U on a two-dimensional square lattice using an advanc
Externí odkaz:
http://arxiv.org/abs/2402.02814
Elucidating the physics of the single-orbital Hubbard model in its intermediate coupling regime is a key missing ingredient to our understanding of metal-insulator transitions in real materials. Using recent non-perturbative many-body techniques that
Externí odkaz:
http://arxiv.org/abs/2312.03123
Publikováno v:
npj Comput. Mater. 10, 108 (2024)
In this work, we investigate collective electronic fluctuations and, in particular, the possibility of the charge density wave ordering in an infinite-layer NdNiO$_2$. We perform advanced many-body calculations for the ab-initio three-orbital model b
Externí odkaz:
http://arxiv.org/abs/2311.09983
Autor:
Stepanov, Evgeny A., Biermann, Silke
Publikováno v:
Phys. Rev. Lett. 132, 226501 (2024)
Spin- or orbital-selective behaviours in correlated electron materials offer rich promise for spintronics or orbitronics phenomena and applications deriving from them. Strong local electronic Coulomb correlations might lead to an orbital-selective Mo
Externí odkaz:
http://arxiv.org/abs/2305.16730
Autor:
Afanasyeva Svetlana, Burkin Viktor, Dyachkovsky Aleksey, Ishchenko Alexandr, Rogaev Konstantin, Sammel Anton, Sidorov Aleksey, Skosyrsky Anatoly, Stepanov Evgeny, Chupashev Andrey
Publikováno v:
EPJ Web of Conferences, Vol 221, p 01043 (2019)
The development of lightweight protective structures of increased ballistic resistance is not an easy task, since often there are conflicting requirements in terms of cost, weight, thickness, materials availability, processability, etc. To assess the
Externí odkaz:
https://doaj.org/article/abf06557f11c4f54a4358fd3f6259304
Autor:
Vandelli, Matteo, Galler, Anna, Rubio, Angel, Lichtenstein, Alexander I., Biermann, Silke, Stepanov, Evgeny A.
Publikováno v:
npj Quantum Mater. 9, 19 (2024)
In this work we computed the phase diagram as a function of temperature and doping for a system of lead adatoms allocated periodically on a silicon (111) surface. This Si(111):Pb material is characterized by a strong and long-ranged Coulomb interacti
Externí odkaz:
http://arxiv.org/abs/2301.07162
Autor:
Szilva, Attila, Kvashnin, Yaroslav, Stepanov, Evgeny A., Nordström, Lars, Eriksson, Olle, Lichtenstein, Alexander I., Katsnelson, Mikhail I.
In this report we review the method of explicit calculations of interatomic exchange interactions of magnetic materials. This involves exchange mechanisms normally referred to as Heisenberg exchange, Dzyaloshinskii-Moriya interaction and anisotropic
Externí odkaz:
http://arxiv.org/abs/2206.02415
Autor:
Vandelli, Matteo, Kaufmann, Josef, El-Nabulsi, Mohammed, Harkov, Viktor, Lichtenstein, Alexander I., Stepanov, Evgeny A.
Publikováno v:
SciPost Phys. 13, 036 (2022)
We present the multi-band dual triply irreducible local expansion (D-TRILEX) approach to interacting electronic systems and discuss its numerical implementation. This method is designed for a self-consistent description of multi-orbital systems that
Externí odkaz:
http://arxiv.org/abs/2204.06426
Autor:
Stepanov, Evgeny A.
Publikováno v:
Phys. Rev. Lett. 129, 096404 (2022)
The orbital-selective electronic behavior is one of the most remarkable manifestations of strong electronic correlations in multi-orbital systems. A prominent example is the orbital-selective Mott transition (OSMT), which is characterized by the coex
Externí odkaz:
http://arxiv.org/abs/2204.02895