K. É. Nagaev
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View article: Electron-electron scattering and conductivity of disordered systems with a Galilean-invariant spectrum
Electron-electron scattering and conductivity of disordered systems with a Galilean-invariant spectrum Open
The electron--electron scattering does not affect the electrical current in\nGalilean--invariant systems. We show that nevertheless electron--electron\ncollisions may contribute to the electric resistivity of systems with parabolic\nspectr…
View article: Electron-electron scattering and conductivity of Galilean-invariant systems
Electron-electron scattering and conductivity of Galilean-invariant systems Open
The electron-electron scattering does not affect the electrical current in Galilean-invariant systems. We show that nevertheless electron-electron collisions may contribute to the electric resistivity of systems with parabolic spectrum pro…
View article: Finite-frequency response of Rasba electron gas with two-particle scattering
Finite-frequency response of Rasba electron gas with two-particle scattering Open
Two-dimensional systems with Rashba spin-orbit coupling are not Galilean\ninvariant and therefore electron--electron collisions in them may affect the\ncurrent. However when taken alone, they cannot ensure a nonzero dc resistivity,\nso the…
View article: Electron-electron scattering and transport properties of spin-orbit coupled electron gas
Electron-electron scattering and transport properties of spin-orbit coupled electron gas Open
We calculate the electrical and thermal conductivity of a two-dimensional electron gas with strong spin--orbit coupling in which the scattering is dominated by electron--electron collisions. Despite the apparent absence of Galilean invaria…
View article: Sign reversal of nonlocal response due to electron collisions
Sign reversal of nonlocal response due to electron collisions Open
Electron-electron collisions are known to cause a nonlocal voltage drop in a presence of current flow. The semi-phenomenological theory predicts this drop to be opposite to the direction of the current in the ballistic regime. We use a mic…
View article: Josephson linewidth in a resistively-shunted model with non-sinusoidal current-phase relation
Josephson linewidth in a resistively-shunted model with non-sinusoidal current-phase relation Open
This is a detailed derivation of the equation for the voltage noise of a resistively shunted Josephson junction with non-sinusoidal current-phase relation, which was presented in Sov. Phys. JETP {\bf 67}, 579 (1988).
View article: Two-particle scattering and resistivity of Rashba electron gas
Two-particle scattering and resistivity of Rashba electron gas Open
We calculate the electrical resistivity of a two-dimensional electron gas that results from two-particle collisions and strong Rashba spin-orbit coupling. In the absence of impurities, two-particle collisions do not contribute to resistivi…
View article: Spin-orbit coupling and resonances in the conductance of quantum wires
Spin-orbit coupling and resonances in the conductance of quantum wires Open
We investigate a possibility of pair electron-electron e-e collisions in a\nballistic wire with spin-orbit coupling and only one populated mode. Unlike in\na spin-degenerate system, a combination of spin-splitting in momentum space\nwith a…
View article: AC Response of the Edge States in a Two‐Dimensional Topological Insulator Coupled to a Conducting Puddle
AC Response of the Edge States in a Two‐Dimensional Topological Insulator Coupled to a Conducting Puddle Open
We calculate an AC response of the edge states of a two‐dimensional topological insulator, which can exchange electrons with a conducting puddle in the bulk of the insulator. This exchange leads to finite corrections to the response of iso…
View article: How an incorrect transition from finite to infinite 2D conductor may result in a false negative relaxation
How an incorrect transition from finite to infinite 2D conductor may result in a false negative relaxation Open
We consider the relaxation of a uniform current in a planar 2D conductor with account taken of electromagnetic retardation effects. If the 2D conductivity is larger than the speed of light, the straightforward solution for an infinite plan…
View article: Shot noise in the edge states of two-dimensional topological insulators
Shot noise in the edge states of two-dimensional topological insulators Open
We calculate the resistance and shot noise in the edge states of a 2D\ntopological insulator that result from the exchange of electrons between these\nstates and conducting puddles in the bulk of the insulator. The two limiting\ncases wher…
View article: Cross correlations in disordered, four-terminal graphene-ribbon conductor: Hanbury-Brown and Twiss exchange as a sign of non-universality of noise
Cross correlations in disordered, four-terminal graphene-ribbon conductor: Hanbury-Brown and Twiss exchange as a sign of non-universality of noise Open
We have investigated current-current correlations in a cross-shaped conductor made of graphene ribbons. We measured auto and cross correlations and compared them with the theoretical predictions for ideal diffusive conductors. Our data dev…