Zobrazeno 1 - 10
of 197
pro vyhledávání: '"Yevtushenko, O."'
Protected helical transport in magnetically doped quantum wires: Beyond the one-dimensional paradigm
Publikováno v:
Phys. Rev. B 102, 161102 (2020)
One-dimensional (1D) quantum wires, which are functionalized by magnetic ad-atoms, can host ballistic helical transport. Helicity protects transport from an undesirable influence of material imperfections, and it makes the magnetically doped wire a v
Externí odkaz:
http://arxiv.org/abs/2003.07261
Autor:
Tsvelik, A. M., Yevtushenko, O. M.
Publikováno v:
New J. Phys. 22 053013 (2020)
We study the phase diagram and transport properties of arbitrarily doped quantum wires functionalized by magnetic adatoms. The appropriate theoretical model for these systems is a dense one-dimensional Kondo Lattice (KL) which consists of itinerant e
Externí odkaz:
http://arxiv.org/abs/1902.01787
Autor:
Tsvelik, A. M., Yevtushenko, O. M.
Publikováno v:
Phys. Rev. B 100, 165110 (2019)
We study one-dimensional Kondo Lattices (KL) which consist of itinerant electrons interacting with Kondo impurities (KI) - localized quantum magnetic moments. We focus on KL with isotropic exchange interaction between electrons and KI and with a high
Externí odkaz:
http://arxiv.org/abs/1812.11507
Autor:
Yevtushenko, O. M., Tsvelik, A. M.
Publikováno v:
Phys. Rev. B 98, 081118 (2018)
We show that edges of Quantum Spin Hall topological insulators represent a natural platform for realization of exotic supersolid phase. On one hand, fermionic edge modes are helical due to the nontrivial topology of the bulk. On the other hand, a dis
Externí odkaz:
http://arxiv.org/abs/1710.07848
Autor:
Tsvelik, A. M., Yevtushenko, O. M.
Publikováno v:
Phys. Rev. Lett. 119, 247203 (2017)
We demonstrate that Kondo-Heisenberg systems, consisting of itinerant electrons and localized magnetic moments (Kondo impurities), can be used as a principally new platform to realize scalar chiral spin order. The underlying physics is governed by a
Externí odkaz:
http://arxiv.org/abs/1707.08320
Publikováno v:
New Journal of Physics, Volume 18, Number 5, Page 053004 (2016)
We study the Kondo chain in the regime of high spin concentration where the low energy physics is dominated by the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction. As has been recently shown (A. M. Tsvelik and O. M. Yevtushenko, Phys. Rev. Lett 115,
Externí odkaz:
http://arxiv.org/abs/1512.07495
Autor:
Tsvelik, A. M., Yevtushenko, O. M.
Publikováno v:
Phys. Rev. Lett. 115, 216402 (2015)
We study the low energy physics of a Kondo chain where electrons from a one-dimensional band interact with magnetic moments via an anisotropic exchange interaction. It is demonstrated that the anisotropy gives rise to two different phases which are s
Externí odkaz:
http://arxiv.org/abs/1506.06368
Publikováno v:
EPL 112 (2015) 57003
Ballistic transport of helical edge modes in two-dimensional topological insulators is protected by time-reversal symmetry. Recently it was pointed out [1] that coupling of non-interacting helical electrons to an array of randomly anisotropic Kondo i
Externí odkaz:
http://arxiv.org/abs/1503.03348
Publikováno v:
Phys. Rev. B 88, 024201 (2013)
We study the quantum corrections to the polarizability of isolated metallic mesoscopic systems using the loop-expansion in diffusive propagators. We show that the difference between connected (grand-canonical ensemble) and isolated (canonical ensembl
Externí odkaz:
http://arxiv.org/abs/1304.4342
Publikováno v:
Phys. Rev. B 86, 241102(R) (2012)
We study the ac conduction in a system of fermions or bosons strongly localised in a disordered array of sites with short-range interactions at frequencies larger than the intersite tunnelling but smaller than the characteristic fluctuation of the on
Externí odkaz:
http://arxiv.org/abs/1210.1997