19 papers
Some novel effects in superconducting nanojunctions
Andrei D. Zaikin
In this paper we address several new developments in the theory of dc Josephson effect in superconducting weak links. We analyze an interplay between quantum interference effects a…
Transport of Interacting Electrons through a Pair of Coupled Metallic Quantum Dots
A. Zaikin, D. Golubev
We derive a complete expression for the interaction correction to the curve of two connected in series metallic quantum dots. For strongly asymmetric dots in a wide range of…
Low-temperature Dephasing and Renormalization in Model Systems
Dmitri S. Golubev, Gerd Schön, Andrei D. Zaikin
We investigate low-temperature dephasing in several model systems, where a quantum degree of freedom is coupled to a bath. Dephasing, defined as the decay of the coherence of inita…
Low temperature decoherence by electron-electron interactions: Role of quantum fluctuations
Dmitri S. Golubev, Andrei D. Zaikin
We derive a general expression for the conductivity of a disordered conductor with electron-electron interactions (treated within the standard model) and evaluate the weak localiza…
Comment on "Absence of electron dephasing at zero temperature"
Dmitri S. Golubev, Andrei D. Zaikin, Gerd Schön
The recent claim by Kirkpatrick and Belitz (cond-mat/0111398) that Ward identities could be used to prove the absence of electron dephasing at T=0 contains serious flaws. These aut…
Superconductor Quantum Dot Superconductor Junction in the Kondo Regime
Y. Avishai, A. Golub, A. D. Zaikin
Electron transport between two superconductors through an Anderson impurity in the Kondo regime is investigated within the slave boson mean field approximation. The current, shot n…