Andreev drag effect in ferromagnetic-normal-superconducting systems

Abstract

We investigate conductances and current correlations in a system consisting of a normal multichannel conductor connected to one superconducting and two ferromagnetic electrodes. For antiparallel orientation of the ferromagnet polarizations, current injection from one ferromagnet can, due to Andreev reflection, lead to a net drag of current from the second ferromagnet toward the superconductor. We present the conditions for the Andreev drag in terms of the degree of lead polarizations, contact conductances and spin-flip scattering. Remarkably, both equilibrium and nonequilibrium zero-frequency current correlations between the ferromagnets become positive even in the presence of spin relaxation.

arXiv comment5 pages, 3 figures; published version, added references

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Cited by in corpus (42)

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• Positive cross-correlations due to Dynamical Channel-Blockade in a three-terminal quantum dot
• Spin-dependent boundary conditions for isotropic superconducting Green's functions
• Magnetization noise in magnetoelectronic nanostructures
• Sign of the crossed conductances at a FSF double interface
• Circuit theory of crossed Andreev reflection
• Spin current shot noise as a probe of interactions in mesoscopic systems
• Pumped spin-current and shot noise spectra in a single quantum dot
• Non-local Andreev transport through an interacting quantum dot
• Dynamical Spin-Blockade in a quantum dot with paramagnetic leads
• Electrical current noise of a beam splitter as a test of spin-entanglement
• Large thermoelectric power and figure of merit in a ferromagnetic-quantum dot-superconducting device
• Three-terminal transport through a quantum dot in the Kondo regime: Conductance, dephasing, and current-current correlations
• Spin-Flip Noise in a Multi-Terminal Spin-Valve
• Full counting statistics of crossed Andreev reflection
• Positive current cross-correlations in a highly transparent normal-superconducting beam splitter due to synchronized Andreev and inverse Andreev reflections
• Self-consistent microscopic calculations for non-local transport through nanoscale superconductors
• Adiabatic pumping in a double-dot Cooper-pair beam splitter
• Absence of split pairs in the cross-correlations of a highly transparent normal metal-superconductor-normal metal electron beam splitter
• Simple Floquet-Wannier-Stark-Andreev viewpoint and emergence of low-energy scales in a voltage-biased three-terminal Josephson junction
• Generation of pure spin currents by superconducting proximity effect in quantum dots
• Shot noise of spin current in ferromagnet-normal-metal systems
• Elementary Charge Transfer Processes in a Superconductor-Ferromagnet Entangler
• Charge transfer statistics and entanglement in normal-quantum dot-superconductor hybrid structures
• Mesoscopic versus Macroscopic division of current fluctuations
• Nonlocal pure spin current injection via quantum pumping and crossed Andreev reflection
• Resistance noise in spin valves
• Semiclassical theory of spin-polarized shot noise in mesoscopic diffusive conductors
• Andreev drag effect via magnetic quasiparticle focusing in normal-superconductor nanojunctions
• Spin detection in quantum dots by electric currents
• Circuit theory for crossed Andreev reflection and nonlocal conductance
• Crossed conductance in FSF double junctions: role of out-of-equilibrium populations
• Long range statistical fluctuations of the crossed Josephson current
• Shot noise of spin current and spin transfer torque
• Current and shot noise in a normal metal-superconductor junction driven by spin-dependent periodic pulse sequence
• Conditional spin counting statistics as a probe of Coulomb interaction and spin-resolved bunching
• Maximal positive cross shot noise from Andreev reflection
• Quantum interference due to crossed Andreev reflection in a d-wave superconductor with two nano-contacts
• Shot Noise of Charge and Spin Current of a Quantum Dot Coupled to Semiconductor Electrodes
• Subgap tunneling via quantum-interference effect: insulators and charge density waves
• Quantum Spin Tomography in Ferromagnet-Normal Conductors
• Enhanced negative nonlocal conductance in an interacting quantum dot connected to two ferromagnetic leads and one superconducting lead