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We have made an experimental study of the tunneling density of states (DOS) in strong ferromagnetic thin films (CoFe) in proximity with a thick superconducting film (Nb) as a function of $d_F$, the ferromagnetic thickness. Remarkably, we…

Superconductivity · Physics 2013-05-29 Serge Reymond , Paul SanGiorgio , M. R. Beasley , Jinho Kim , Tesu Kim , Kookrin Char

We study the density of states (DOS) inside superconducting Josephson SIsFS junctions with complex interlayer consisting of a thin superconducting spacer 's' between insulator I and a ferromagnetic metal F. The consideration is focused on…

Superconductivity · Physics 2021-08-11 S. V. Bakurskiy , A. A. Neilo , N. V. Klenov , I. I. Soloviev , A. A. Golubov , M. Yu. Kupriyanov

The results of calculations of the spatially-resolved density of states (DoS) in an S(F/N) bilayer are presented (S is a superconductor, F is a metallic ferromagnet, N is a normal metal) within quasiclassical theory in the dirty limit.…

Superconductivity · Physics 2009-11-11 A. A. Golubov , M. Yu. Kupriyanov , M. Siegel

We have measured the tunneling density of states (DOS) in a superconductor carrying a supercurrent or exposed to an external magnetic field. The pair correlations are weakened by the supercurrent, leading to a modification of the DOS and to…

Superconductivity · Physics 2009-11-10 A. Anthore , H. Pothier , D. Esteve

We have experimentally investigated the density of states (DOS) in Nb/Ni (S/F) bilayers as a function of Ni thickness, $d_F$. Our thinnest samples show the usual DOS peak at $\pm\Delta_0$, whereas intermediate-thickness samples have an…

Superconductivity · Physics 2009-11-13 P. SanGiorgio , S. Reymond , M. R. Beasley , J. H. Kwon , K. Char

In this Letter we discuss various properties of the local density of states (DOS) for a superconductor-ferromagnet hybrid system. The DOS is modified at small energies on both sides of the interface. Due to the interplay of…

Condensed Matter · Physics 2009-10-31 Rosario Fazio , Carlo Lucheroni

We study the dependence of the electronic density of states (DOS) on the distance from the boundary for a ferromagnet/superconductor bilayer. We calculate the electron density of states in such structure taking into account the two-band…

Other Condensed Matter · Physics 2009-11-10 D. Gusakova , A. Vedyayev , O. Kotelnikova , N. Ryzhanova , A. Buzdin

We study the impact of the long-range spin-triplet proximity effect on the density of states (DOS) in planar SF1F2S Josephson junctions that consist of conventional superconductors (S) connected by two metallic monodomain ferromagnets (F1…

Superconductivity · Physics 2013-03-07 Milos Knezevic , Luka Trifunovic , Zoran Radovic

We calculate the density of states (DOS) in a diffusive superconducting/ferromagnetic bilayer with a spin-active interface. We use a self-consistent numerical treatment to make a systematic study of the effects of the Spin-Dependence of…

Superconductivity · Physics 2009-02-23 Audrey Cottet , Jacob Linder

We present an extensive theoretical investigation of the proximity effects that occur in Ferromagnet/Superconductor ($F/S$) systems. We use a numerical method to solve self consistently the Bogoliubov-de Gennes equations in the continuum.…

Superconductivity · Physics 2009-11-07 Klaus Halterman , Oriol T. Valls

We study the density of states (DoS) $\nu(E)$ in a normal-metallic (N) film contacted by a bulk superconductor (S). We assume that the system is diffusive and the SN interface is transparent. In the limit of thin N layer (compared to the…

Superconductivity · Physics 2022-12-29 A. A. Mazanik , Ya. V. Fominov

We develop a quasi-classical theory for the superconducting proximity effect in a ballistic ferromagnetic layer in contact with a d-wave superconductor. In agreement with recent experiments we find that the density of states oscillate…

Superconductivity · Physics 2009-11-10 Zahra Faraii , Malek Zareyan

We study the tunneling density of states (DOS) in an interacting disordered three-dimensional metal and calculate its energy dependence in the quasiballistic regime, for the deviation from the Fermi energy, $E-E_F$, exceeding the elastic…

Mesoscale and Nanoscale Physics · Physics 2020-02-18 Daniil S. Antonenko , Mikhail A. Skvortsov

Electronic density of states (DOS) at Fermi level has been investigated in ultrathin Ag films grown on Si(111)-(7x7) down to the two dimensional limit of a single atomic layer. Measurement of DOS at Fermi level by scanning tunneling…

Mesoscale and Nanoscale Physics · Physics 2014-12-04 R. Batabyal , A. H. M. Abdul Wasey , J. C. Mahato , Debolina Das , G. P. Das , B. N. Dev

We consider a spin valve composed of a superconducting film (S) between two ferromagnetic insulators (FI) on two sides. In the dirty limit the superconductor is described by Usadel equations. Appropriate boundary conditions were chosen for…

Superconductivity · Physics 2024-12-20 D. V. Seleznev , S. S. Seidov , N. G. Pugach , D. G. Bezymiannykh , S. I. Mukhin , B. G. Lvov

We study the electronic densities of states (DOS) of strongly disordered superconducting thin films of TiN. We find, using Scanning Tunneling Microscopy (STM) that the DOS decreases towards the Fermi level in the normal phase obtained by…

Energy variation of the density of states (DOS) has been calculated in the superconductor/ferromagnet/ferromagnet/superconductor structure (SFFS) in the frame of Gorkov equations taking into account the s-d electron scattering in the…

Other Condensed Matter · Physics 2016-08-31 D. Gusakova , A. Vedyayev , O. Kotel'nikova

We present transport and tunneling measurements of Pb-Ag bilayers with thicknesses, $d_{Pb}$ and $d_{Ag}$, that are much less than the superconducting coherence length. The transition temperature, $T_c$, and energy gap, $\Delta$, in the…

Superconductivity · Physics 2012-08-27 Zhenyi Long , M. D. Stewart, , Taejoon Kouh , James M. Valles

We consider the proximity effect in multiterminal ferromagnet superconductor (FSF) hybrid structures in which two or three electrodes are connected to a superconductor. We show that two competing effects take place in these systems: (i)…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 H. Jirari , R. Mélin , N. Stefanakis

We developed the self-consistent method for the calculation of the density of states $N(\epsilon)$ in the SF bilayers. It based on the quasi-classical Usadel equations and takes into account the suppression of superconductivity in the S…

Superconductivity · Physics 2009-11-11 D. Yu. Gusakova , A. A. Golubov , M. Yu. Kupriyanov , A. Buzdin
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