Nonlocal transport through multiterminal diffusive superconducting nanostructures (2009)
Bergeret, F. S., Yeyati, A. Levy
Motivated by recent experiments on nonlocal transport through multiterminal superconducting hybrid structures, we present self-consistent calculations based on quasiclassical Green's functions for...
Mélin, R., Bergeret, F. S., Yeyati, A. Levy
We implement self-consistent microscopic calculations in order to describe out-of-equilibrium non-local transport in normal metal-superconductor-normal metal hybrid structures in the presence of a...
Josephson effect through a quantum dot array (2007)
Bergeret, F. S., Yeyati, A. Levy, Martin-Rodero, A.
We analyze the ground state properties of an array of quantum dots connected in series between superconducting electrodes. This system is represented by a finite Hubbard chain coupled at both ends to...
Magnetic Interference Patterns and Vortices in Diffusive SNS junctions (2007)
Cuevas, J. C., Bergeret, F. S.
We study theoretically the electronic and transport properties of a diffusive superconductor-normal metal-superconductor (SNS) junction in the presence of a perpendicular magnetic field. We show that...
Nonhomogeneous magnetization and superconductivity in superconductor-ferromagnet structures (2007)
Bergeret, F. S., Volkov, A. F., Efetov, K. B.
We study two different superconductor-ferromagnet (S/F) structures. We consider first a Josephson junction which consists of two S/F bilayers separated by an insulating layer. We show that for an...
Hammer, J. C., Cuevas, J. C., Bergeret, F. S., Belzig, W.
We present a theoretical study of the density of states and supercurrent in diffusive superconductor-normal metal-superconductor (SNS) junctions. In particular, we study the influence on these two...
Hammer, J. C., Cuevas, Juan Carlos, Bergeret, F. S., Belzig, Wolfgang
We present a theoretical study of the density of states and supercurrent in diffusive superconductor-normal metal-superconductor (SNS) junctions. In particular, we study the influence on these two...
Hammer, J.C., Cuevas, J.C., Bergeret, F.S., Belzig, W.
Physical Review B, 76(2007) S.064514/1-11
Bergeret, F. S., Volkov, A. F., Efetov, K. B.
We analyze the Josephson current in a junction consisting of two superconductors (S) and a ferromagnetic layer (F) for arbitrary impurity concentration. In addition to non-magnetic impurities, we...
Reversing non-local transport through a superconductor by electromagnetic excitations (2006)
Yeyati, A. Levy, Bergeret, F. S., Martin-Rodero, A., Klapwijk, T. M.
Superconductors connected to normal metallic electrodes at the nanoscale provide a potential source of non-locally entangled electron pairs. Such states would arise from Cooper pairs splitting into...
Comment on ''Superconducting decay length in a ferromagnetic metal'' (2006)
Volkov, A. F., Bergeret, F. S., Efetov, K. B.
In the paper " Superconducting decay length in a ferromagnetic metal" by Gusakova, Kupriyanov and Golubov [Pis'ma v ZhETF 83, 487 (2006); cond-mat/0605137], the authors claim that they solved the...
Interplay between Josephson effect and magnetic interactions in double quantum dots (2006)
Bergeret, F. S., Yeyati, A. Levy, Martin-Rodero, A.
We analyze the magnetic and transport properties of a double quantum dot coupled to superconducting leads. In addition to the possible phase transition to a $\pi$ state, already present in the single...
Bergeret, F. S., Yeyati, A. Levy, Martin-Rodero, A.
The inverse proximity effect, i.e. the induction of a magnetic moment in the superconductor in superconductor-ferromagnet (S/F) junctions is studied theoretically. We present a microscopic approach...
Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures (2005)
Bergeret, F. S., Volkov, A. F., Efetov, K. B.
We consider novel unusual effects in superconductor-ferromagnet (S/F) structures. In particular we analyze the triplet component (TC) of the condensate generated in those systems.This component is...
Spin Screening and Antiscreening in a Ferromagnet/Superconductor Heterojunction (2004)
We present a theoretical study of spin screening effects in a ferromagnet/superconductor (F/S) heterojunction. It is shown that the magnetic moment of the ferromagnet is screened or antiscreened,...
Spin screening of magnetic moments in superconductors (2004)
Bergeret, F. S., Volkov, A. F., Efetov, K. B.
We consider ferromagnetic particles embedded into a superconductor and study the screening of their magnetic moments by the spins of the Cooper pairs in the superconductor. It is shown that a...
Induced Ferromagnetism due to Superconductivity in Superconductor-Ferromagnet structures (2003)
Bergeret, F. S., Volkov, A. F., Efetov, K. B.
We consider a superconductor-ferromagnet (S/F) structure and assume that above the superconducting transition temperature $T_{c}$ the magnetic moment exists only in F. {In a simple model of the...
Manifestation of triplet superconductivity in superconductor-ferromagnet structures (2003)
Bergeret, F. S., Volkov, A. F., Efetov, K. B.
We study proximity effects in a multilayered superconductor/ferromagnet (S/F) structure with arbitrary relative directions of the magnetization ${\bf M}$. If the magnetizations of different layers...
Current-voltage characteristics and the zero-resistance state in a 2DEG (2003)
Bergeret, F. S., Huckestein, B., Volkov, A. F.
We study the current-voltage characteristics (CVC) of two-dimensional electron gases (2DEG) with microwave induced negative conductance in a magnetic field. We show that due to the Hall effect,...
Odd triplet superconductivity in superconductor/ferromagnet multilayered structures (2002)
Volkov, A. F., Bergeret, F. S., Efetov, K. B.
We demonstrate that in multilayered superconductor-ferromagnet structures a non-collinear alignment of the magnetizations of different ferromagnetic layers generates a triplet superconducting...
Resistance of a domain wall in the quasiclassical approach (2002)
Bergeret, F. S., Volkov, A. F., Efetov, K. B.
Starting from a simple microscopic model, we have derived a kinetic equation for the matrix distribution function. We employed this equation to calculate the conductance $G$ in a mesoscopic F'/F/F'...
Bergeret, F. S., Pavlovskii, V. V., Volkov, A. F., Efetov, K. B.
We calculate the conductance of a superconductor/ferromagnet (S/F) mesoscopic structure in the dirty limit. First we assume that the ferromagnet exhibits a homogeneous magnetization and consider the...
Local density of states in superconductor-strong ferromagnet structures (2001)
Bergeret, F. S., Volkov, A. F., Efetov, K. B.
We study the dependence of the local density of states (LDOS) on coordinates for a superconductor-ferromagnet (S/F) bilayer and a S/F/S structure assuming that the exchange energy h in the...
Bergeret, F. S., Volkov, A. F., Efetov, K. B.
We calculate the dc Josephson current $I_J$ for two types of superconductor-ferromagnet (S/F) Josephson junctions. The junction of the first type is a S/F/S junction. On the basis of the Eilenberger...
Bergeret, F. S., Volkov, A. F., Efetov, K. B.
We calculate the dc Josephson current for two superconductor-ferromagnet (S/F) bilayers separated by a thin insulating film. It is demonstrated that the critical Josephson current $I_{c}$ in the...
Long-range effects in superconductor-ferromagnet structures (2000)
Bergeret, F. S., Volkov, A. F., Efetov, K. B.
We analyze the proximity effect in a superconductor/ferromagnet (S/F) structure with a local inhomogeneity of the magnetization in the ferromagnet near the S/F interface. We demonstrate that not only...
Cryptoferromagnetic state in superconductor-ferromagnet multilayers (2000)
Bergeret, F. S., Efetov, K. B., Larkin, A. I.
We study a possibility of a non-homogeneous magnetic order (cryptoferromagnetic state) in heterostructures consisting of a bulk superconductor and a ferromagnetic thin layer that can be due to the...