Proximity effects and characteristic lengths in ferromagnet-superconductor structures

Abstract

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. We obtain the pair amplitude and the local density of states (DOS), and use these results to extract the relevant lengths characterizing the leakage of superconductivity into the magnet and to study spin splitting into the superconductor. These phenomena are investigated as a function of parameters such as temperature, magnet polarization, interfacial scattering, sample size and Fermi wavevector mismatch, all of which turn out to have important influence on the results. These comprehensive results should help characterize and analyze future data and are shown to be in agreement with existing experiments.

24 pages, including 26 figures

References in corpus (8)

• Josephson current in superconductor-ferromagnet structures with a nonhomogeneous magnetization
• Oscillations of the superconducting critical current in Nb-Cu-Ni-Cu-Nb junctions
• Nonmonotonic critical temperature in superconductor/ferromagnet bilayers
• Proximity effects at ferromagnet-superconductor interfaces
• Local density of states in superconductor-strong ferromagnet structures
• Local spectroscopy of a proximity superconductor at very low temperature
• Inverse proximity effect in superconductors near ferromagnetic material
• Magnetic Field Scaling of the Conductance of Epitaxial Cuprate-Manganite Bilayers

Cited by in corpus (48)

• Proximity effects in superconductor-ferromagnet heterostructures
• Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures
• Ferromagnet-Superconductor Hybrids
• Induced Ferromagnetism due to Superconductivity in Superconductor-Ferromagnet structures
• Spin-dependent Cooper Pair Phase and Pure Spin Supercurrents in Strongly Polarized Ferromagnets
• Manifestation of triplet superconductivity in superconductor-ferromagnet structures
• Josephson effect in double-barrier superconductor-ferromagnet junctions
• Angular dependence of superconductivity in superconductor / spin valve heterostructures
• Crossed Andreev Reflection in Structures Consisting of a Superconductor with Ferromagnetic Leads
• Layered ferromagnet-superconductor structures: the $\pi$ state and proximity effects
• Anomalous density of states in a metallic film in proximity with a superconductor
• Charge and Spin Currents in Ferromagnetic Josephson junctions
• Half-Metallic Superconducting Triplet Spin MultiValves
• Proximity effects and triplet correlations in Ferromagnet/Ferromagnet/Superconductor nanostructures
• Spontaneous spin current due to triplet superconductor--ferromagnet interfaces
• Thermodynamics and Phase Diagrams of layered superconductor/ferromagnet nanostructures
• Proximity-induced density-of-states oscillations in a superconductor/strong-ferromagnet system
• Proximity effect in ferromagnet/superconductor hybrids: from diffusive to ballistic motion
• Tunneling Conductance and Spin Transport in Clean Ferromagnet-Ferromagnet-Superconductor Heterostructures
• Nanoscale ferromagnet-superconductor-ferromagnet switches controlled by magnetization orientation
• Supercurrent decay in ballistic magnetic Josephson junctions
• Stability of $\pi$ junction configurations in ferromagnet-superconductor heterostructures
• Orientation-dependent transport in junctions formed by $d$-wave altermagnets and $d$-wave superconductors
• Dissipative conductivity of a dirty superconductor with Dynes subgap states under a dc bias current up to the depairing current density
• Ferromagnet-superconductor proximity effect: The clean limit
• Tunneling density of states as a function of thickness in superconductor/ strong ferromagnet bilayers
• Superconducting proximity effects in metals with a repulsive pairing interaction
• Transport in Ferromagnet/Superconductor spin valves
• Tunable superconducting critical temperature in ballistic hybrid structures with strong spin-orbit coupling
• Nanoscale spin ordering and spin screening effects in tunnel ferromagnetic Josephson junctions
• Magnetic proximity effect at interface between a cuprate superconductor and an oxide spin valve
• Spin current and spin transfer torque in ferromagnet/superconductor spin valves
• First order phase transitions in Ferromagnet/Superconductor layered structures
• Energy gap of ferromagnet-superconductor bilayers
• Enhanced superconducting proximity effect in clean ferromagnetic domain structures
• Microscopic theory of equilibrium properties of F/S/F trilayers with weak ferromagnets
• Spin-split conductance and subgap peak in ferromagnet/superconductor spin valve heterostructures
• Supergap and subgap enhanced currents in asymmetric {S_1FS_2} Josephson junctions
• Local Density of States and Order Parameter Configurations in Layered Ferromagnet-Superconductor Structures
• Low-temperature proximity effect in clean metals
• Andreev bound states for superconducting-ferromagnetic box
• Simulations of experimental conductance spectra of $YB{a}_{2}C{u}_3{O}_y$ junctions: Role of a long d-wave decay length and a small $is$ component in the pair potential near the interface
• Quasiparticle states in superconducting superlattices
• Signatures of enhanced spin-triplet superconductivity induced by interfacial properties
• Quantum Phase Transitions in Proximitized Josephson Junctions
• Quasiparticle conductance in Spin Valve Josephson Structures
• Bias current dependence of superconducting transition temperature in superconducting spin valve nanowires
• Phase separation and proximity effects in itinerant ferromagnet-superconductor heterostructures