Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Efremov, Dmitry"'
Publikováno v:
J. Phys. Chem. Lett. 2023, 14, 8060-8068
Despite decades of intensive experimental and theoretical efforts, the physics of cuprate high-temperature superconductors in general, and, in particular, their normal state, is still under debate. Here, we report our investigation of low-energy char
Externí odkaz:
http://arxiv.org/abs/2304.07224
Publikováno v:
Phys. Rev. B 105, 155123 (2022)
Starting with general semiclassical equations of motion for electrons in the presence of electric and magnetic fields, we extend the Chambers formula to include in addition to a magnetic field, time-dependent electric fields and bands with Berry curv
Externí odkaz:
http://arxiv.org/abs/2111.09520
Autor:
Efremov, Dmitry V., Shtyk, Alex, Rost, Andreas W., Chamon, Claudio, Mackenzie, Andrew P., Betouras, Joseph J.
Publikováno v:
Phys. Rev. Lett. 123, 207202 (2019)
A wide variety of complex phases in quantum materials are driven by electron-electron interactions, which are enhanced through density of states peaks. A well known example occurs at van Hove singularities where the Fermi surface undergoes a topologi
Externí odkaz:
http://arxiv.org/abs/1810.13392
Publikováno v:
Phys. Rev. Materials 3, 014414 (2019)
We investigate magnetic excitations in iridium insulators with pentavalent Ir$^{5+}$ ($5d^4$) ions with strong spin-orbit coupling. We obtain a microscopic model based on the local Ir$^{5+}$ multiplets involving $J=0$ (singlet), $J=1$ (triplet), and
Externí odkaz:
http://arxiv.org/abs/1810.13058
We analyze the effect of disorder on the weak-coupling instabilities of quadratic band crossing point (QBCP) in two-dimensional Fermi systems, which, in the clean limit, display interaction- driven topological insulating phases. In the framework of a
Externí odkaz:
http://arxiv.org/abs/1710.09632
Publikováno v:
Phys. Rev. B 95, 024511 (2017)
The competition among superconductivity, stripe-type magnetic order, and a new type of $C_4$ symmetric magnetic order in $\mathrm{Ba_{1-x}K_xFe_2As_2}$ is theoretically studied, focusing on its impact on the global phase diagram. By carrying out a re
Externí odkaz:
http://arxiv.org/abs/1608.07935
Autor:
Khim, Seunghyun, Koepernik, Klaus, Efremov, Dmitry V., Klotz, J., Förster, T., Wosnitza, J., Sturza, Mihai I., Wurmehl, Sabine, Hess, Christian, Brink, Jeroen van den, Büchner, Bernd
Publikováno v:
Phys. Rev. B 94, 165145 (2016)
The layered ternary compound TaIrTe$_4$ has been predicted to be a type-II Weyl semimetal with only four Weyl points just above the Fermi energy. Performing magnetotransport measurements on this material we find that the resistivity does not saturate
Externí odkaz:
http://arxiv.org/abs/1605.03380
Autor:
Efremov, Dmitry, Gerasimova, Alla
Publikováno v:
In Materials Today: Proceedings 2021 38 Part 4:1685-1688
Publikováno v:
Phys. Rev. Lett. 113, 177001 (2014)
Bulk TiSe$_2$ is an intrinsically layered transition metal dichalcogenide (TMD) hosting both superconducting and charge density wave (CDW) ordering. Motivated by the recent progress in preparing two-dimensional TMDs, we study these frustrated orderin
Externí odkaz:
http://arxiv.org/abs/1403.4271
Autor:
Venderbos, Jörn W. F., Manzardo, Marco, Efremov, Dmitry V., Brink, Jeroen van den, Ortix, Carmine
Publikováno v:
Phys. Rev. B 93, 045428 (2016)
We consider a system of spinless fermions on the honeycomb lattice with substrate-induced modulated electrostatic potentials tripling the unit cell. The resulting non-Abelian SU(2) gauge fields act cooperatively to realize a quadratic band crossing p
Externí odkaz:
http://arxiv.org/abs/1402.3145